I installed Firefox 3 and I get this happening with the menus:

(http://i32.tinypic.com/oixrk.jpg)

Right Click, File view etc....

This is my system information:

Your computer has a Windows Experience Index base score of 3.3
Your Windows Graphics Experience score is 3.3

WindowBlinds version : WindowBlinds 6.0 (build 49 x86 - Vista Edition)

WindowBlinds is installed correctly on this PC
WindowBlinds appears to be activated on this PC
(Generic PnP Monitor) 1 is attached to ATI Radeon HD 2400 Series

Wblind.dll         2007/10/01 12:34:20
Wbsrv.dll         2008/06/19 17:07:26
Wbconfig.exe         2007/10/01 18:09:33
Wbload.exe         2007/09/27 16:42:44
Wbhelp.dll         2007/07/11 15:06:07
Tray.dll              2007/09/12 18:52:21
Wbload.dll              2008/04/26 16:14:28
Screen.exe         2008/06/19 17:07:24

Any Help?