diff --git a/.gitignore b/.gitignore
index 7aa315be2..40d900a2f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,4 +14,18 @@
 ehthumbs.db
 Thumbs.db
 .idea/
-/nbproject/private/
\ No newline at end of file
+/nbproject/private/
+data_files/
+qa-plugin/ajax-images
+qa-plugin/api
+qa-plugin/Donut-admin
+qa-lang/fr
+qa-plugin/neayi
+qa-plugin/q2a-ask-with-tags-list
+qa-plugin/q2a-breadcrumbs
+qa-plugin/q2a-email-notification
+qa-plugin/q2a-markdown-editor
+qa-plugin/q2a-open-login
+qa-plugin/q2a-social-share
+qa-theme/Donut-theme
+qa-plugin/QA-Google-Analytics-Plugin
diff --git a/qa-include/Q2A/Plugin/PluginManager.php b/qa-include/Q2A/Plugin/PluginManager.php
index ebf7ce21b..dd6f2a1e0 100644
--- a/qa-include/Q2A/Plugin/PluginManager.php
+++ b/qa-include/Q2A/Plugin/PluginManager.php
@@ -136,7 +136,12 @@ public function getFilesystemPlugins($fullPath = false)
 	{
 		$result = array();
 
-		$fileSystemPluginFiles = glob(QA_PLUGIN_DIR . '*/qa-plugin.php');
+		$plugins = glob(QA_PLUGIN_DIR . '*');
+		foreach ($plugins as $aPlugin)
+		{
+			if (file_exists($aPlugin . '/qa-plugin.php'))
+				$fileSystemPluginFiles[] = $aPlugin . '/qa-plugin.php' . "\n";
+		}
 
 		foreach ($fileSystemPluginFiles as $pluginFile) {
 			$directory = dirname($pluginFile) . '/';
diff --git a/qa-include/app/admin.php b/qa-include/app/admin.php
index bd998edcb..3757a21a3 100644
--- a/qa-include/app/admin.php
+++ b/qa-include/app/admin.php
@@ -148,7 +148,11 @@ function qa_admin_theme_options()
 	if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }
 
 	$metadataUtil = new Q2A_Util_Metadata();
-	foreach (glob(QA_THEME_DIR . '*', GLOB_ONLYDIR) as $directory) {
+	foreach (glob(QA_THEME_DIR . '*') as $directory) {
+
+		if (!file_exists($directory . '/qa-theme.php'))
+			continue;
+
 		$theme = basename($directory);
 		$metadata = $metadataUtil->fetchFromAddonPath($directory);
 		if (empty($metadata)) {
diff --git a/qa-include/app/blobs.php b/qa-include/app/blobs.php
index 41a64ad6c..5b2f23edd 100644
--- a/qa-include/app/blobs.php
+++ b/qa-include/app/blobs.php
@@ -213,5 +213,18 @@ function qa_blob_exists($blobid)
 
 	require_once QA_INCLUDE_DIR . 'db/blobs.php';
 
-	return qa_db_blob_exists($blobid);
+	$db_blob_exists = qa_db_blob_exists($blobid);
+
+	if (!$db_blob_exists)
+		return false;
+
+	if (!defined('QA_BLOBS_DIRECTORY'))
+		return true;
+	else
+	{
+		$blob = qa_db_blob_read($blobid);
+
+		$filename = qa_get_blob_filename($blobid, $blob['format']);
+		return is_readable($filename);
+	}
 }
diff --git a/qa-include/db/users.php b/qa-include/db/users.php
index a8ddcd8fe..f2300a4af 100644
--- a/qa-include/db/users.php
+++ b/qa-include/db/users.php
@@ -83,6 +83,14 @@ function qa_db_user_delete($userid)
 {
 	qa_db_query_sub('UPDATE ^posts SET lastuserid=NULL WHERE lastuserid=$', $userid);
 	qa_db_query_sub('DELETE FROM ^userpoints WHERE userid=$', $userid);
+
+	// Delete blobs including the files:
+	require_once QA_INCLUDE_DIR . 'app/blobs.php';
+
+	$blobIds = qa_db_read_all_values(qa_db_query_sub('SELECT avatarblobid FROM ^users WHERE userid=$',	$userid));
+	foreach ($blobIds as $blobid)
+		qa_delete_blob($blobid);
+
 	qa_db_query_sub('DELETE FROM ^blobs WHERE blobid=(SELECT avatarblobid FROM ^users WHERE userid=$)', $userid);
 	qa_db_query_sub('DELETE FROM ^users WHERE userid=$', $userid);
 
@@ -92,6 +100,7 @@ function qa_db_user_delete($userid)
 	qa_db_query_sub('UPDATE ^posts SET userid=NULL WHERE userid=$', $userid);
 	qa_db_query_sub('DELETE FROM ^userlogins WHERE userid=$', $userid);
 	qa_db_query_sub('DELETE FROM ^userprofile WHERE userid=$', $userid);
+	qa_db_query_sub('DELETE FROM ^usermetas WHERE userid=$', $userid);
 	qa_db_query_sub('DELETE FROM ^userfavorites WHERE userid=$', $userid);
 	qa_db_query_sub('DELETE FROM ^userevents WHERE userid=$', $userid);
 	qa_db_query_sub('DELETE FROM ^uservotes WHERE userid=$', $userid);