Try the Firefox SafeMode to see how it works there.
A troubleshooting mode, which disables most Add-ons.
(If you're not using it, switch to the Default Theme.)

• You can open the Firefox 4/5/6/7 SafeMode by holding the Shft key when you use the Firefox desktop or Start menu shortcut.
• Or use the Help menu item, click on Restart with Add-ons Disabled... while Firefox is running.
  

Don't select anything right now, just use "Continue in SafeMode."

To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before using the Firefox shortcut (without the Shft key) to open it again.

If it is good in the Firefox SafeMode, your problem is probably caused by an extension, and you need to figure out which one.
http://support.mozilla.com/en-US/kb/troubleshooting+extensions+and+themes

Same results when attempting safe mode

held down shift, ran FF

Your crashreport is
https://crash-stats.mozilla.com/report/index/bp-029cdbba-72c6-4c35-ad3b-ae8ed2111026
Firefox 7.0.1 Crash Report [@ mozcomp.dll@0x9305 ]
NEW Startup crash in mozcomp.dll with Oracle Enterprise, F5 Networks, Passlogix V-GO, IBM Tivoli Access Manager SSO
See related Bug 680927 for more info
The likely problem is use of certain Oracle etc software, the developer Oracle being aware of the problem and working on a fix. Meanwhile there is a registry hack as a potential workaround, or the simpler workaround of downgrading temporarily to firefox 3.6.23.