Firefox froze up and won't open a new session, why?

I've rebooted my computer three times. Firefox want's to restore session. It won't do anything else. I've been out of action an hour now! I'm sure its because of a recient opened web site. I do not like Internet explorer. Do I have to uninstall Firefox and reinstall it? And will that fix it?

You can check if you have a user.js file in the Firefox profile folder that sets the browser.sessionstore.resume_session_once pref to true.
*http://kb.mozillazine.org/browser.sessionstore.resume_session_once
You can use this button to go to the Firefox profile folder:
*Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)
You can check its content with a plain text editor (right-click: Open with) if you didn't create this file yourself.
The user.js file is read each time Firefox is started and initializes preferences to the value specified in this file, so preferences set via user.js can only be changed temporarily for the current session.
*http://kb.mozillazine.org/Preferences_not_saved

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