Windows 7: browser image in classic windows theme

Hi

I am using win 7 64 bit

I got tired of the Ie 9 with the blurry text and its many ways to try and fix it with no results. So i switched to firefox and it was solved right away.

But now i discover another problem. Because i like to use windows classic theme with the grey menu bar. But when i use firefox browser and click on the bookmark menu, then it leaves a image or "print" of the bookmark window in my start menu.



Look at the screenshot were you can see some remaining text of my bookmark window.

I can remove it when i adjust my start menu but it comes back when i use the bookmarks again.

This only happens in firefox but when i change the theme to win 7 or any other then it dosent happens.

How do i fix this ?

I disablet the hardware accelration in firefox and now it works