Well I deleted version 8 and found version 7.0 and reloaded it and blocked downloading new updates. Everything works great. When Mozilla figures out what is happening to version 8, then i will upgrade. I like firefox and don't like spend over 1 1/2hrs trying to use the new brouser! !

where did you find a 7.0 version? same problem here!

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 7.6.2 version of Roboform.
http://www.roboform.com/support/news

Hi I downloaded the latest version of Roboform and then reinstalled version 8 and it worked! Thank you very much! Tom