nope, no problem with firefox 2, i unistalled ff3 and tried on ff2 and it worked fine, heres the system info on the windows blinds
Your computer has a Windows Experience Index base score of 5.5
Your Windows Graphics Experience score is 5.9
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 NVIDIA GeForce 8800 GTX
Wblind.dll 2007/10/01 12:34:20
Wbsrv.dll 2008/07/01 15:20:26
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 2008/07/01 15:20:24
oh and i have no addons or plugins installed in ff3