Immediately on upgrading to 8, portions of my screen "black out" as I move my mouse over them. Links in particular are blacked out (that is to say the block of screen that the link is part of) when I move my mouse over them.

Also, scrolling functionality isn't working; when I try to scroll most of the time it is unresponsive and whether or not it responds to the scrolling the Entire page (everything below the tabs to the taskbar) has a better than even chance of blacking out. Tinkering with moving my mouse pointer or clicking in random places will get rid of these.
I've restarted the browser in Safe Mode, Reinstalled, Restarted computer, Drivers were updated incidentally on Friday (before this started), Full virus scan on Thursday morning. When I restart Firefox in Safe Mode the problems aren't as bad by an order of magnitude, but still bad enough to be unusable.
Firefox is essentially unusable for me at this point. Since I can't downgrade to 7, I'm very close to just washing my hands and switching to Chrome (which I dislike).

Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode
In Firefox 4 and later [http://kb.mozillazine.org/Safe_mode Safe mode] disables extensions and disables hardware acceleration.
*Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
If disabling hardware acceleration works then check if there is an update available for your graphics display driver.

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