Wireless mouse will not work at the top of the page on ANY website while running Firefox 7.0.1

I am currently running Firefox 7.0.1 and have not had many problems until today. I have noticed that my wireless mouse will not work at the top of any website. This means I cannot log into many sites. I have also noticed that during page downloads, I have to move the mouse in order for the page to load or it just pauses. Any help would be appreciated!

If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
*Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
* Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")
Se also:
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

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