Index: program/include/rcube_imap_generic.php
===================================================================
--- program/include/rcube_imap_generic.php	(revision c09e3287c1704473bc9a68c6eaae45ae2ad3c418)
+++ program/include/rcube_imap_generic.php	(revision f66f5f02e30d9fc2d5c06eeefb4377b8ff36fce2)
@@ -1559,34 +1559,19 @@
                     $str = $matches[1];
 
-                    // swap parents with quotes, then explode
-                    $str = preg_replace('/[()]/', '"', $str);
-                    $a = rcube_explode_quoted_string(' ', $str);
-
-                    // did we get the right number of replies?
-                    $parts_count = count($a);
-                    if ($parts_count>=6) {
-                        for ($i=0; $i<$parts_count; $i=$i+2) {
-                            if ($a[$i] == 'UID') {
-                                $result[$id]->uid = intval($a[$i+1]);
-                            }
-                            else if ($a[$i] == 'RFC822.SIZE') {
-                                $result[$id]->size = intval($a[$i+1]);
-                            }
-                            else if ($a[$i] == 'INTERNALDATE') {
-                                $time_str = $a[$i+1];
-                            }
-                            else if ($a[$i] == 'FLAGS') {
-                                $flags_str = $a[$i+1];
-                            }
+                    while (list($name, $value) = $this->tokenizeResponse($str, 2)) {
+                        if ($name == 'UID') {
+                            $result[$id]->uid = intval($value);
                         }
-
-                        $time_str = str_replace('"', '', $time_str);
-
-                        // if time is gmt...
-                        $time_str = str_replace('GMT','+0000',$time_str);
-
-                        $result[$id]->internaldate = $time_str;
-                        $result[$id]->timestamp    = $this->StrToTime($time_str);
-                        $result[$id]->date         = $time_str;
+                        else if ($name == 'RFC822.SIZE') {
+                            $result[$id]->size = intval($value);
+                        }
+                        else if ($name == 'INTERNALDATE') {
+                            $result[$id]->internaldate = $value;
+                            $result[$id]->date         = $value;
+                            $result[$id]->timestamp    = $this->StrToTime($value);
+                        }
+                        else if ($name == 'FLAGS') {
+                            $flags_a = $value;
+                        }
                     }
 
@@ -1636,5 +1621,5 @@
                     // handle FLAGS reply after headers (AOL, Zimbra?)
                     if (preg_match('/\s+FLAGS \((.*)\)\)$/', $line, $matches)) {
-                        $flags_str = $matches[1];
+                        $flags_a = $this->tokenizeResponse($matches[1]);
                         break;
                     }
@@ -1660,8 +1645,8 @@
                     // create array with header field:data
                     while (list($lines_key, $str) = each($lines)) {
-                        list($field, $string) = $this->splitHeaderLine($str);
+                        list($field, $string) = explode(':', $str, 2);
 
                         $field  = strtolower($field);
-                        $string = preg_replace('/\n\s*/', ' ', $string);
+                        $string = preg_replace('/\n[\t\s]*/', ' ', trim($string));
 
                         switch ($field) {
@@ -1727,26 +1712,29 @@
 
                 // process flags
-                if (!empty($flags_str)) {
-                    $flags_str = preg_replace('/[\\\"]/', '', $flags_str);
-                    $flags_a   = explode(' ', $flags_str);
-
-                    if (is_array($flags_a)) {
-                        foreach($flags_a as $flag) {
-                            $flag = strtoupper($flag);
-                            if ($flag == 'SEEN') {
-                                $result[$id]->seen = true;
-                            } else if ($flag == 'DELETED') {
-                                $result[$id]->deleted = true;
-                            } else if ($flag == 'ANSWERED') {
-                                $result[$id]->answered = true;
-                            } else if ($flag == '$FORWARDED') {
-                                $result[$id]->forwarded = true;
-                            } else if ($flag == '$MDNSENT') {
-                                $result[$id]->mdn_sent = true;
-                            } else if ($flag == 'FLAGGED') {
-                                 $result[$id]->flagged = true;
-                            }
+                if (!empty($flags_a)) {
+                    foreach ($flags_a as $flag) {
+                        $flag = str_replace('\\', '', $flag);
+                        $result[$id]->flags[] = $flag;
+
+                        switch (strtoupper($flag)) {
+                        case 'SEEN':
+                            $result[$id]->seen = true;
+                            break;
+                        case 'DELETED':
+                            $result[$id]->deleted = true;
+                            break;
+                        case 'ANSWERED':
+                            $result[$id]->answered = true;
+                            break;
+                        case '$FORWARDED':
+                            $result[$id]->forwarded = true;
+                            break;
+                        case '$MDNSENT':
+                            $result[$id]->mdn_sent = true;
+                            break;
+                        case 'FLAGGED':
+                            $result[$id]->flagged = true;
+                            break;
                         }
-                        $result[$id]->flags = $flags_a;
                     }
                 }
@@ -3279,19 +3267,21 @@
      * @return int Unix timestamp
      */
-    private function strToTime($date)
-    {
-        $ts = (int) rcube_strtotime($date);
+    static function strToTime($date)
+    {
+        // support non-standard "GMTXXXX" literal
+        $date = preg_replace('/GMT\s*([+-][0-9]+)/', '\\1', $date);
+
+        // if date parsing fails, we have a date in non-rfc format
+        // remove token from the end and try again
+        while (($ts = intval(@strtotime($date))) <= 0) {
+            $d = explode(' ', $date);
+            array_pop($d);
+            if (empty($d)) {
+                break;
+            }
+            $date = implode(' ', $d);
+        }
+
         return $ts < 0 ? 0 : $ts;
-    }
-
-    private function splitHeaderLine($string)
-    {
-        $pos = strpos($string, ':');
-        if ($pos>0) {
-            $res[0] = substr($string, 0, $pos);
-            $res[1] = trim(substr($string, $pos+1));
-            return $res;
-        }
-        return $string;
     }