Yesterday I completely deleted the program and reinstalled it, but still the same thing.
I'm baffled.
Mine shuts off my PCMCIA slot presumably because the CPU is running too hot. I tried to lower it but it continues. I decided to just live with it.
Even if you uninstall, it doesn't get rid of the directory, and the previous work unit, and config files. After you uninstall, completely zot the folding@home directory, and then start from scratch. This should get you past any corrupted files, or cores, and get you a completely different workunit. If it still hangs, then you probably have other issues, that we can deal with
If you're running windows XP, you might want to make sure, that there isn't a rogue copy of Winfah.exe or another core running. Do a ctrl-alt-delete, go to task manager, processes, check the box, (from all users), and look to see if any instances of those programs are running. If there are, zap them.