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Navigation disabled after updating to FF4

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  • Bulleted list itemFrustrating beyond words.
  • Bulleted list itemThe arrow buttons are just uselessly hanging there.
  • Bulleted list itemIt should the most simple to thing in the world to just be able to go BACK to the PREVIOUS PAGE!!!
* Bulleted list itemFrustrating beyond words. * Bulleted list itemThe arrow buttons are just uselessly hanging there. * Bulleted list itemIt should the most simple to thing in the world to just be able to go '''BACK''' to the '''PREVIOUS PAGE!!!'''

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

  1. You can open the Firefox 4.0 SafeMode by holding the Shft key when you use the Firefox desktop or Start menu shortcut.
  2. Or use the Help menu item, click on Restart with Add-ons Disabled... while Firefox is running.

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