Josie, another FREE thing to try:

Go to your "RUN" command then type:

"CHKDSK /F" (without the quotes) and it will check for corrupted system files and fix (/F) them on the fly.

Coincidentally, I just did my desktop yesterday after getting: "Warning: Unresponsive Script" messages.

It seems to have resolved the problem. Firefox said: Try running FF with all plugins disabled (There is a "Tools" option for that), no help.

A caveat, a CHKDSK will take awhile to complete so be patient. It will create a log file which may be helpful in isolating the all-important CAUSE.

HTH

I certainly can relate to your frustration.