Odd.

My computer has been acting up for weeks; windows explorer has been terribly slow; taking a minute and a half typically to open a folder on the desktop with two rtfs in it. I tried killing half the processes that were running in task manager, to no avail. Then I downloaded AVG for a virus scan, and that fixed it. It didn't find anything; it ran a scan and said no dangerous programs detected, and didn't clean anything out. But as soon as it was finished updating, the windows explorer thing went away.

O.o