Firefox 7.0.1 crashing after install, crashes whenever program is started.

Question

So, after I close Firefox and reopen it, it updates with the new version (7.0.1) and then upon finishing the install, I get this message:
Problem signature:
Problem Event Name: BEX
Application Name: firefox.exe
Application Version: 7.0.1.4288
Application Timestamp: 4e83b93a
Fault Module Name: certstem.dll_unloaded
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 4d89d89f
Exception Offset: 1000862b
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789
I have no idea what the heck is wrong, and I've been looking everywhere for the answer. I'm using an older version (6.0.2) to post this. I've done clean wipes of Firefox and tried to reinstall, and that doesn't work. Help plox?

Answer 1

No solution, and others may give you a better answer, but it appears to be a Windows OS error, have you tried the Microsoft forums e.g. http://answers.microsoft.com/en-us/windows/forum/windows_other-windows_update/problem-event-name-bex-error-message/cf5baf73-0877-4070-abfb-a2c3a17a9e10 and tried asking a question over there.
Post back with how you get on.