Mozilla crashes are in proportion to the version number. Version 2 has twice as many crashes as version 1. Version 3 has three times as many crashes as version 2.
1) Start Firefox in safe mode[Start->All Programs->Mozilla Firefox->Mozilla Firefox (Safe Mode)]
2)Disable all plugins and extensions
Uninstall or Disable all Extensions. I had the same problem with Firefox[ error with daemon tools Lite 4.30.0 toolbar ]