There are two programs which are causing major crashing problems with Firefox 8.

Do you have Trusteer Rapport installed? If so, disable it.

   * Windows: "Start->All Programs->Trusteer Rapport->Stop Rapport"
   * Mac: "System Preferences -> Other -> Rapport -> Stop Rapport" 

For more help you can ask their helpdesk.
http://www.trusteer.com/support/en/report-problem

http://kb.mozillazine.org/Firefox_crashes#Trusteer_Rapport

Roboform is also causing Firefox 8 to crash upon startup. Install the latest 7.6.3 version of Roboform.
http://www.roboform.com/support/news

Please read firefox crashes. Note it should be possible to retrieve a crash ID and submit it even if firefox crashes, before you are able to go to about:crashes.

If necessary and a crash report failed to submit you may attempt to submit it by using an alternative browser. See also http://kb.mozillazine.org/Breakpad#Location_of_crash_reports .

The general tips about crashes in the first article may help you, but better advice will be available if you are able to submit a crash report and mention the crash ID.

Thanks!!! Roboform was causing the crashes. Updated and now works fine.