Help - IE Script Error - Tried Everything I can find

What changed? I loaded IE 8. I started getting the script errors on almost every page. I searched the web for answers.

I did the following:

1. checked the advanced settings to make sure Disable Script Debugging was checked and Display a notification for every script error was unchecked (they were)
2. cleared all browsing history, cookies, etc.
3. ran my registery cleanup and optimizer
4. uninstalled IE 8, back to IE 7, still getting errors
5. repeated steps 1 thru 3

Still getting errors. HELP !!!!!! Please, while I still have some hair left.

Thanks in advance for any assistance.

zhopez:

You haven't said whether you have done a System Restore from Safe Mode.

Ardneh