Would you lose any work if you "force quit" (Command - Option - Escape) Firefox? If not, that probably is safest. When you restart Firefox, it usually will display all the same tabs. If you force quit a second time, then when you restart, Firefox usually will apologize and let you choose from a list of what you had open so you can avoid the bad page.

Edit: I don't know whether you can update to the last of the 3.5 series, or the 3.6 series, if not to Firefox 4. That might be a good idea.

Thanks. That worked beautifully.

my problem is I cant bypass the MS Removal Tool pop up. Im trying to connect to Symantec to run a scan but it doesnt let me.

I removed firewall because I have a secure wi fi connection, but that didnt help.

@mgottd, are you running Windows? If so, use the Task Manager to shut down your problem browser (Ctrl+Shift+Esc, then check the Applications tab and the Processes tab).

Can you try to get these two highly regarded scanners by copying the URL and then pasting it in the Windows XP Start > Run box or the Windows 7 "orb" search box and pressing Enter:

Malwarebytes Anti-malware : http://www.malwarebytes.org/products/malwarebytes_free

SUPERAntiSpyware : http://www.superantispyware.com/

Also, please note that your Firewall protects against inbound connections from the internet as well as your local network, so you probably do not want to turn it off for very long.

by the way, I have PC not Mac