Firefox process starts, but no window is displayed.
Suddenly Firefox will not start. The firefox.exe process is running fine, but no window is displayed. And no sign of it in the taskbar. There is no error-messages. I have tried to create a new profile, it did not help.
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.1; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
When this happens, if IE8 is NOT open, it WON'T open until I kill the Firefox process.
The only solution I have found is to reboot my machine.
Vista Home AMD Triple Core Machine 3 Gig of Ram Avast Antivirus