diff -up lib/Horde/Text/Filter/Emails.php.old lib/Horde/Text/Filter/Emails.php
--- lib/Horde/Text/Filter/Emails.php.old	2013-01-10 15:19:06.000000000 +0100
+++ lib/Horde/Text/Filter/Emails.php	2013-01-10 15:19:14.000000000 +0100
@@ -124,7 +124,8 @@ EOR;
      */
     static public function decode($text)
     {
-        return preg_replace('/\01\01\01([\w=+\/]*)\01\01\01/e', 'base64_decode(\'$1\')', $text);
+        $callback = function($hex) { return base64_decode($hex[1]); };
+        return preg_replace_callback('/\01\01\01([\w=+\/]*)\01\01\01/', $callback , $text);
     }
 
 }
diff -up lib/Horde/Text/Filter/Linkurls.php.old lib/Horde/Text/Filter/Linkurls.php
--- lib/Horde/Text/Filter/Linkurls.php.old	2013-01-10 15:10:48.000000000 +0100
+++ lib/Horde/Text/Filter/Linkurls.php	2013-01-10 15:18:31.000000000 +0100
@@ -174,7 +174,8 @@ END_OF_REGEX;
      */
     static public function decode($text)
     {
-        return preg_replace('/\00\00\00([\w=+\/]*)\00\00\00/e', 'base64_decode(\'$1\')', $text);
+        $callback = function($hex) { return base64_decode($hex[1]); };
+        return preg_replace_callback('/\00\00\00([\w=+\/]*)\00\00\00/', $callback, $text);
     }
 
 }