diff --git a/actions/avatarsettings.php b/actions/avatarsettings.php
index 7dd53f6eb5..f38a44a24a 100644
--- a/actions/avatarsettings.php
+++ b/actions/avatarsettings.php
@@ -145,6 +145,7 @@ class AvatarsettingsAction extends AccountSettingsAction
                                         'height' => AVATAR_PROFILE_SIZE,
                                         'alt' => $user->nickname));
             $this->elementEnd('div');
+            $this->submit('delete', _('Delete'));
             $this->elementEnd('li');
         }
 
@@ -256,6 +257,8 @@ class AvatarsettingsAction extends AccountSettingsAction
             $this->uploadAvatar();
         } else if ($this->arg('crop')) {
             $this->cropAvatar();
+        } else if ($this->arg('delete')) {
+            $this->deleteAvatar();
         } else {
             $this->showForm(_('Unexpected form submission.'));
         }
@@ -344,6 +347,29 @@ class AvatarsettingsAction extends AccountSettingsAction
             $this->showForm(_('Failed updating avatar.'));
         }
     }
+    
+    /**
+     * Get rid of the current avatar.
+     *
+     * @return void
+     */
+    
+    function deleteAvatar()
+    {
+        $user = common_current_user();
+        $profile = $user->getProfile();
+        
+        $avatar = $profile->getOriginalAvatar();
+        $avatar->delete();
+        $avatar = $profile->getAvatar(AVATAR_PROFILE_SIZE);
+        $avatar->delete();
+        $avatar = $profile->getAvatar(AVATAR_STREAM_SIZE);
+        $avatar->delete();
+        $avatar = $profile->getAvatar(AVATAR_MINI_SIZE);
+        $avatar->delete();
+
+        $this->showForm(_('Avatar deleted.'), true);
+    }
 
     /**
      * Add the jCrop stylesheet
diff --git a/lib/util.php b/lib/util.php
index 9b38b55961..c0c9801116 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -412,14 +412,14 @@ function common_replace_urls_callback($text, $callback) {
 
     // Then clean up what the regex left behind
     $offset = 0;
-    foreach($matches[0] as $url) {
-        $url = htmlspecialchars_decode($url);
+    foreach($matches[0] as $orig_url) {
+        $url = htmlspecialchars_decode($orig_url);
 
         // Make sure we didn't pick up an email address
         if (preg_match('#^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$#i', $url)) continue;
 
-        // Remove trailing punctuation
-        $url = rtrim($url, '.?!,;:\'"`');
+        // Remove surrounding punctuation
+        $url = trim($url, '.?!,;:\'"`([<');
 
         // Remove surrounding parens and the like
         preg_match('/[)\]>]+$/', $url, $trailing);
@@ -446,7 +446,7 @@ function common_replace_urls_callback($text, $callback) {
 
         // If the first part wasn't cap'd but the last part was, we captured too much
         if ((!$prev_part && $last_part)) {
-            $url = substr_replace($url, '', mb_strpos($url, '.'.$url_parts[2], 0));
+            $url = mb_substr($url, 0 , mb_strpos($url, '.'.$url_parts['2'], 0));
         }
 
         // Capture the new TLD
@@ -456,6 +456,9 @@ function common_replace_urls_callback($text, $callback) {
 
         if (!in_array($url_parts[2], $tlds)) continue;
 
+        // Put the url back the way we found it.
+        $url = (mb_strpos($orig_url, htmlspecialchars($url)) === FALSE) ? $url:htmlspecialchars($url);
+
         // Call user specified func
         $modified_url = $callback($url);