timthumb.php vulnerability

It looks like the version of timthumb.php that you are using is slightly modified from his published version, but you may consider generating the thumbnails in a different way or auditing the code.

It appears there is a zero-day vulnerability in the timthumb.php code (and potentially other vulnerabilities) that has serious repercussions.

Link to the article:
http://markmaunder.com/2011/zero-day-vulnerability-in-many-wordpress-themes/