diff --git a/app/src/main/java/gr/thmmy/mthmmy/activities/base/BaseActivity.java b/app/src/main/java/gr/thmmy/mthmmy/activities/base/BaseActivity.java
index 16483ea2..4794cf9e 100644
--- a/app/src/main/java/gr/thmmy/mthmmy/activities/base/BaseActivity.java
+++ b/app/src/main/java/gr/thmmy/mthmmy/activities/base/BaseActivity.java
@@ -4,7 +4,6 @@ import android.app.ProgressDialog;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
-import android.graphics.Color;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.AsyncTask;
diff --git a/app/src/main/java/gr/thmmy/mthmmy/activities/profile/ProfileActivity.java b/app/src/main/java/gr/thmmy/mthmmy/activities/profile/ProfileActivity.java
index 92e505cb..c68befd8 100644
--- a/app/src/main/java/gr/thmmy/mthmmy/activities/profile/ProfileActivity.java
+++ b/app/src/main/java/gr/thmmy/mthmmy/activities/profile/ProfileActivity.java
@@ -125,8 +125,7 @@ public class ProfileActivity extends BaseActivity implements LatestPostsFragment
                     .transform(new CircleTransform())
                     .into(thumbnailView);
         usernameView = (TextView) findViewById(R.id.profile_activity_username);
-        if (username == null || Objects.equals(username, "")) usernameView.setText("Username");
-        else usernameView.setText(username);
+        if (username != null && !Objects.equals(username, "")) usernameView.setText(username);
         personalTextView = (TextView) findViewById(R.id.profile_activity_personal_text);
 
         viewPager = (ViewPager) findViewById(R.id.profile_tab_container);
diff --git a/app/src/main/java/gr/thmmy/mthmmy/activities/profile/latestPosts/LatestPostsFragment.java b/app/src/main/java/gr/thmmy/mthmmy/activities/profile/latestPosts/LatestPostsFragment.java
index 99b52db1..01786f3b 100644
--- a/app/src/main/java/gr/thmmy/mthmmy/activities/profile/latestPosts/LatestPostsFragment.java
+++ b/app/src/main/java/gr/thmmy/mthmmy/activities/profile/latestPosts/LatestPostsFragment.java
@@ -48,7 +48,6 @@ public class LatestPostsFragment extends BaseFragment implements LatestPostsAdap
      * are added in {@link LatestPostsTask}.
      */
     private ArrayList<PostSummary> parsedTopicSummaries;
-    private RecyclerView mainContent;
     private LatestPostsAdapter latestPostsAdapter;
     private int numberOfPages = -1;
     private int pagesLoaded = 0;
@@ -90,7 +89,7 @@ public class LatestPostsFragment extends BaseFragment implements LatestPostsAdap
                              Bundle savedInstanceState) {
         final View rootView = inflater.inflate(R.layout.fragment_latest_posts, container, false);
         latestPostsAdapter = new LatestPostsAdapter(fragmentInteractionListener, parsedTopicSummaries);
-        mainContent = (RecyclerView) rootView.findViewById(R.id.profile_latest_posts_recycler);
+        RecyclerView mainContent = (RecyclerView) rootView.findViewById(R.id.profile_latest_posts_recycler);
         mainContent.setAdapter(latestPostsAdapter);
         final LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
         mainContent.setLayoutManager(layoutManager);
@@ -193,9 +192,7 @@ public class LatestPostsFragment extends BaseFragment implements LatestPostsAdap
             }
             //Parse was successful
             progressBar.setVisibility(ProgressBar.INVISIBLE);
-            latestPostsAdapter = new LatestPostsAdapter(fragmentInteractionListener, parsedTopicSummaries);
-            mainContent.swapAdapter(latestPostsAdapter, false);
-            //latestPostsAdapter.notifyDataSetChanged();
+            latestPostsAdapter.notifyDataSetChanged();
             isLoadingMore = false;
         }
 
diff --git a/app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicActivity.java b/app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicActivity.java
index 85766993..0a2d1e66 100644
--- a/app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicActivity.java
+++ b/app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicActivity.java
@@ -23,13 +23,13 @@ import org.jsoup.nodes.Document;
 
 import java.io.IOException;
 import java.util.ArrayList;
-import java.util.List;
 import java.util.Objects;
 
 import gr.thmmy.mthmmy.R;
 import gr.thmmy.mthmmy.activities.LoginActivity;
 import gr.thmmy.mthmmy.activities.base.BaseActivity;
 import gr.thmmy.mthmmy.model.Post;
+import gr.thmmy.mthmmy.utils.ParseHelpers;
 import me.zhanghai.android.materialprogressbar.MaterialProgressBar;
 import mthmmy.utils.Report;
 import okhttp3.Request;
@@ -58,7 +58,8 @@ public class TopicActivity extends BaseActivity {
     public static final String BUNDLE_TOPIC_TITLE = "TOPIC_TITLE";
     private static TopicTask topicTask;
     //About posts
-    private List<Post> postsList;
+    private TopicAdapter topicAdapter;
+    private ArrayList<Post> postsList;
     private static final int NO_POST_FOCUS = -1;
     private static int postFocus = NO_POST_FOCUS;
     private static int postFocusPosition = 0;
@@ -119,8 +120,9 @@ public class TopicActivity extends BaseActivity {
         recyclerView.setHasFixedSize(true);
         LinearLayoutManager layoutManager = new LinearLayoutManager(getApplicationContext());
         recyclerView.setLayoutManager(layoutManager);
-        recyclerView.setAdapter(new TopicAdapter(getApplicationContext(), progressBar, postsList,
-                new TopicTask()));
+        topicAdapter = new TopicAdapter(getApplicationContext(), progressBar, postsList,
+                topicTask);
+        recyclerView.setAdapter(topicAdapter);
 
         replyFAB = (FloatingActionButton) findViewById(R.id.topic_fab); //TODO hide fab while logged out
         replyFAB.setEnabled(false);
@@ -383,11 +385,7 @@ public class TopicActivity extends BaseActivity {
             switch (parseResult) {
                 case SUCCESS:
                     progressBar.setVisibility(ProgressBar.INVISIBLE);
-
-
-                    recyclerView.swapAdapter(new TopicAdapter(getApplicationContext(), progressBar,
-                            postsList, new TopicTask()), false);
-
+                    topicAdapter.customNotifyDataSetChanged();
                     replyFAB.setEnabled(true);
 
                     //Set current page
@@ -421,7 +419,7 @@ public class TopicActivity extends BaseActivity {
          * @see org.jsoup.Jsoup Jsoup
          */
         private void parse(Document topic) {
-            String language = TopicParser.defineLanguage(topic);
+            ParseHelpers.Language language = ParseHelpers.Language.getLanguage(topic);
 
             //Finds topic title if missing
             if (topicTitle == null || Objects.equals(topicTitle, "")) {
@@ -448,7 +446,9 @@ public class TopicActivity extends BaseActivity {
                 }
             }
 
-            postsList = TopicParser.parseTopic(topic, language);
+            postsList.clear();
+            postsList.addAll(TopicParser.parseTopic(topic, language));
+            //postsList = TopicParser.parseTopic(topic, language);
         }
     }
 
diff --git a/app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicAdapter.java b/app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicAdapter.java
index 64278cab..dae50a99 100644
--- a/app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicAdapter.java
+++ b/app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicAdapter.java
@@ -425,6 +425,15 @@ class TopicAdapter extends RecyclerView.Adapter<TopicAdapter.MyViewHolder> {
         holder.post.setOnTouchListener(new CustomTouchListener(holder.post, holder.cardView));
     }
 
+    void customNotifyDataSetChanged() {
+        viewProperties.clear();
+        for (int i = 0; i < postsList.size(); ++i) {
+            //Initializes properties, array's values will be false by default
+            viewProperties.add(new boolean[3]);
+        }
+        notifyDataSetChanged();
+    }
+
     @Override
     public int getItemCount() {
         return postsList.size();
diff --git a/app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicParser.java b/app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicParser.java
index 34066a3c..538dec17 100644
--- a/app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicParser.java
+++ b/app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicParser.java
@@ -21,23 +21,13 @@ import mthmmy.utils.Report;
 
 /**
  * Singleton used for parsing a topic.
- * <p>Class contains the methods:<ul><li>{@link #parseUsersViewingThisTopic(Document, String)}</li>
- * <li>{@link #parseCurrentPageIndex(Document, String)}</li>
- * <li>{@link #parseTopicNumberOfPages(Document, int, String)}</li>
- * <li>{@link #parseTopic(Document, String)}</li>
- * <li>{@link #defineLanguage(Document)}</li></ul></p>
+ * <p>Class contains the methods:<ul><li>{@link #parseUsersViewingThisTopic(Document,
+ * gr.thmmy.mthmmy.utils.ParseHelpers.Language)}</li>
+ * <li>{@link #parseCurrentPageIndex(Document, gr.thmmy.mthmmy.utils.ParseHelpers.Language)}</li>
+ * <li>{@link #parseTopicNumberOfPages(Document, int, gr.thmmy.mthmmy.utils.ParseHelpers.Language)}</li>
+ * <li>{@link #parseTopic(Document, gr.thmmy.mthmmy.utils.ParseHelpers.Language)}</li>
  */
 class TopicParser {
-    //Languages supported
-    /**
-     * String constant containing one of the supported forum languages
-     */
-    private static final String LANGUAGE_GREEK = "Greek";
-    /**
-     * String constant containing one of the supported forum languages
-     */
-    private static final String LANGUAGE_ENGLISH = "English";
-
     //User colors
     private static final int USER_COLOR_BLACK = Color.parseColor("#000000");
     private static final int USER_COLOR_RED = Color.parseColor("#F44336");
@@ -56,13 +46,14 @@ class TopicParser {
      * Returns users currently viewing this topic.
      *
      * @param topic    {@link Document} object containing this topic's source code
-     * @param language a String containing this topic's language set, this is returned by
-     *                 {@link #defineLanguage(Document)}
+     * @param language a {@link gr.thmmy.mthmmy.utils.ParseHelpers.Language} containing this topic's
+     *                 language set, this is returned by
+     *                 {@link gr.thmmy.mthmmy.utils.ParseHelpers.Language#getLanguage(Document)}
      * @return String containing html with the usernames of users
      * @see org.jsoup.Jsoup Jsoup
      */
-    static String parseUsersViewingThisTopic(Document topic, String language) {
-        if (Objects.equals(language, LANGUAGE_GREEK))
+    static String parseUsersViewingThisTopic(Document topic, ParseHelpers.Language language) {
+        if (language.is(ParseHelpers.Language.GREEK))
             return topic.select("td:containsOwn(διαβάζουν αυτό το θέμα)").first().html();
         return topic.select("td:containsOwn(are viewing this topic)").first().html();
     }
@@ -71,15 +62,16 @@ class TopicParser {
      * Returns current topic's page index.
      *
      * @param topic    {@link Document} object containing this topic's source code
-     * @param language a String containing this topic's language set, this is returned by
-     *                 {@link #defineLanguage(Document)}
+     * @param language a {@link gr.thmmy.mthmmy.utils.ParseHelpers.Language} containing this topic's
+     *                 language set, this is returned by
+     *                 {@link gr.thmmy.mthmmy.utils.ParseHelpers.Language#getLanguage(Document)}
      * @return int containing parsed topic's current page
      * @see org.jsoup.Jsoup Jsoup
      */
-    static int parseCurrentPageIndex(Document topic, String language) {
+    static int parseCurrentPageIndex(Document topic, ParseHelpers.Language language) {
         int parsedPage = 1;
 
-        if (Objects.equals(language, LANGUAGE_GREEK)) {
+        if (language.is(ParseHelpers.Language.GREEK)) {
             Elements findCurrentPage = topic.select("td:contains(Σελίδες:)>b");
 
             for (Element item : findCurrentPage) {
@@ -108,15 +100,16 @@ class TopicParser {
      *
      * @param topic       {@link Document} object containing this topic's source code
      * @param currentPage an int containing current page of this topic
-     * @param language    a String containing this topic's language set, this is returned by
-     *                    {@link #defineLanguage(Document)}
+     * @param language    a {@link gr.thmmy.mthmmy.utils.ParseHelpers.Language} containing this topic's
+     *                    language set, this is returned by
+     *                    {@link gr.thmmy.mthmmy.utils.ParseHelpers.Language#getLanguage(Document)}
      * @return int containing the number of pages
      * @see org.jsoup.Jsoup Jsoup
      */
-    static int parseTopicNumberOfPages(Document topic, int currentPage, String language) {
+    static int parseTopicNumberOfPages(Document topic, int currentPage, ParseHelpers.Language language) {
         int returnPages = 1;
 
-        if (Objects.equals(language, LANGUAGE_GREEK)) {
+        if (language.is(ParseHelpers.Language.GREEK)) {
             Elements pages = topic.select("td:contains(Σελίδες:)>a.navPages");
 
             if (pages.size() != 0) {
@@ -145,19 +138,20 @@ class TopicParser {
      * This method parses all the information of a topic and it's posts.
      *
      * @param topic    {@link Document} object containing this topic's source code
-     * @param language a String containing this topic's language set, this is returned by
-     *                 {@link #defineLanguage(Document)}
+     * @param language a {@link gr.thmmy.mthmmy.utils.ParseHelpers.Language} containing this topic's
+     *                 language set, this is returned by
+     *                 {@link gr.thmmy.mthmmy.utils.ParseHelpers.Language#getLanguage(Document)}
      * @return {@link ArrayList} of {@link Post}s
      * @see org.jsoup.Jsoup Jsoup
      */
-    static ArrayList<Post> parseTopic(Document topic, String language) {
+    static ArrayList<Post> parseTopic(Document topic, ParseHelpers.Language language) {
         //Method's variables
         final int NO_INDEX = -1;
         ArrayList<Post> parsedPostsList = new ArrayList<>();
         Elements postRows;
 
         //Each row is a post
-        if (Objects.equals(language, LANGUAGE_GREEK))
+        if (language.is(ParseHelpers.Language.GREEK))
             postRows = topic.select("form[id=quickModForm]>table>tbody>tr:matches(στις)");
         else {
             postRows = topic.select("form[id=quickModForm]>table>tbody>tr:matches(on)");
@@ -213,7 +207,7 @@ class TopicParser {
 
             //Language dependent parsing
             Element userName;
-            if (Objects.equals(language, LANGUAGE_GREEK)) {
+            if (language.is(ParseHelpers.Language.GREEK)) {
                 //Finds username and profile's url
                 userName = thisRow.select("a[title^=Εμφάνιση προφίλ του μέλους]").first();
                 if (userName == null) { //Deleted profile
@@ -343,7 +337,7 @@ class TopicParser {
                 Element usersExtraInfo = userName.parent().nextElementSibling(); //Get sibling "div"
                 List<String> infoList = Arrays.asList(usersExtraInfo.html().split("<br>"));
 
-                if (Objects.equals(language, LANGUAGE_GREEK)) {
+                if (language.is(ParseHelpers.Language.GREEK)) {
                     for (String line : infoList) {
                         if (line.contains("Μηνύματα:")) {
                             postsLineIndex = infoList.indexOf(line);
@@ -423,23 +417,6 @@ class TopicParser {
         return parsedPostsList;
     }
 
-    /**
-     * Returns one of the supported forum languages.
-     * <p>Forum supports: <ul><li>{@link #LANGUAGE_ENGLISH}</li>
-     * <li>{@link #LANGUAGE_GREEK}</li></ul></p>
-     *
-     * @param topic {@link Document} object containing this topic's source code
-     * @return String containing the language of a topic
-     * @see org.jsoup.Jsoup Jsoup
-     */
-    static String defineLanguage(Document topic) {
-        if (topic.select("h3").text().contains("Καλώς ορίσατε")) {
-            return LANGUAGE_GREEK;
-        } else { //Default is english (eg. guest's language)
-            return LANGUAGE_ENGLISH;
-        }
-    }
-
     /**
      * Returns the color of a user according to user's rank on forum.
      *
diff --git a/app/src/main/java/gr/thmmy/mthmmy/model/Category.java b/app/src/main/java/gr/thmmy/mthmmy/model/Category.java
index 648c0bb9..ce43c42d 100644
--- a/app/src/main/java/gr/thmmy/mthmmy/model/Category.java
+++ b/app/src/main/java/gr/thmmy/mthmmy/model/Category.java
@@ -12,7 +12,7 @@ public class Category implements Parent<Board>
     private final String title;
     private final String categoryURL;
     private boolean expanded = false;
-    private List<Board> boards;
+    private final List<Board> boards;
 
     public Category(String title, String categoryURL) {
         this.title = title;
diff --git a/app/src/main/java/gr/thmmy/mthmmy/utils/ParseHelpers.java b/app/src/main/java/gr/thmmy/mthmmy/utils/ParseHelpers.java
index 24fb958e..83da1c7c 100644
--- a/app/src/main/java/gr/thmmy/mthmmy/utils/ParseHelpers.java
+++ b/app/src/main/java/gr/thmmy/mthmmy/utils/ParseHelpers.java
@@ -1,5 +1,6 @@
 package gr.thmmy.mthmmy.utils;
 
+import org.jsoup.nodes.Document;
 import org.jsoup.nodes.Element;
 import org.jsoup.select.Elements;
 
@@ -8,6 +9,52 @@ import java.util.ArrayList;
 public class ParseHelpers {
     private static final String TAG = "ParseHelpers";
 
+    public enum Language {
+        GREEK, ENGLISH, ENGLISH_GUEST, PAGE_INCOMPLETE, UNDEFINED_LANGUAGE;
+
+        /**
+         * Returns one of the supported forum languages.
+         * <p>Forum supports: <ul><li>{@link #ENGLISH}</li>
+         * <li>{@link #GREEK}</li></ul></p>
+         *
+         * @param page {@link Document} object containing this page's source code
+         * @return String containing the language of a topic
+         * @see org.jsoup.Jsoup Jsoup
+         */
+        public static Language getLanguage(Document page) {
+            Element welcoming = page.select("h3").first();
+            if (welcoming == null) {
+                if (page.select("div[id=myuser]").first().text().contains("Welcome"))
+                    return ENGLISH_GUEST;
+                return PAGE_INCOMPLETE;
+            } else if (welcoming.text().contains("Καλώς ορίσατε")) return GREEK;
+            else if (welcoming.text().contains("Hey")) return ENGLISH;
+            else return UNDEFINED_LANGUAGE;
+        }
+
+        public boolean is(Language other) {
+            return this == ENGLISH && other == ENGLISH_GUEST ||
+                    this == ENGLISH_GUEST && other == ENGLISH ||
+                    this == other;
+        }
+    }
+
+    public enum State {
+        UNAUTHORIZED_OR_MISSING, NEW_PM, READY;
+
+        public static State getState(Document page) {
+            Elements warnings = page.select("form[id=frmLogin] tr.catbg~tr>td.windowbg");
+            if (warnings != null) {
+                for (Element warning : warnings) {
+                    if (warning.text().contains("The topic or board you are looking for appears " +
+                            "to be either missing or off limits to you."))
+                        return UNAUTHORIZED_OR_MISSING;
+                }
+            }
+            return READY;
+        }
+    }
+
     public static String youtubeEmbeddedFix(Element html) {
         //Fixes embedded videos
         Elements noembedTag = html.select("noembed");
diff --git a/app/src/main/res/layout-v21/activity_profile.xml b/app/src/main/res/layout-v21/activity_profile.xml
index 288ac7ba..9c057147 100644
--- a/app/src/main/res/layout-v21/activity_profile.xml
+++ b/app/src/main/res/layout-v21/activity_profile.xml
@@ -68,6 +68,7 @@
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_gravity="center"
+                android:text="@string/username"
                 android:textColor="@color/accent"
                 android:textSize="25sp"/>
         </android.support.v7.widget.Toolbar>
diff --git a/app/src/main/res/layout/activity_profile.xml b/app/src/main/res/layout/activity_profile.xml
index 51b3db32..ea3999e3 100644
--- a/app/src/main/res/layout/activity_profile.xml
+++ b/app/src/main/res/layout/activity_profile.xml
@@ -67,6 +67,7 @@
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_gravity="center"
+                android:text="@string/username"
                 android:textColor="@color/accent"
                 android:textSize="25sp"/>
         </android.support.v7.widget.Toolbar>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 7226450f..dc72f670 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -25,7 +25,6 @@
     <string name="child_board_last_post">Last post</string>
     <string name="topic_title">Topics</string>
     <string name="topic_subject">Subject</string>
-    <string name="topic_locked_sticky">Locked/Sticky</string>
     <string name="topic_started_by">Started by: %1$s</string>
     <string name="topic_stats">Stats</string>
     <string name="topic_last_post">Last post on: %1$s</string>
@@ -44,6 +43,7 @@
     <string name="button_last">last</string>
 
     <!--Profile Activity-->
+    <string name="username">Username</string>
     <string name="general_statistics_title">General Statistics</string>
     <string name="general_statistics">Statistics</string>
     <string name="posting_activity_by_time_title">Posting Activity</string>