Windows XP freezes on "Logging off..." screen

Read the title. Any tips on how to fix it? This happens sometimes on both of my computers, that are both pretty newly installed. =/

I'd be willing to bet it's some driver hanging on shutdown. Make sure your drivers are up-to-date. Also, could you tell us what specs your machines are? It will help in determining the root of your problem.

Both have Windows XP Home Edition (Swedish) with Service Pack 2 and as far as I know, both computer's drivers are up to date.

Computer 1:

Pentium 4, 2 GHz
ATI Radeon 8500LE
512 MB RAM

Computer 2:

AMD64 X2 4400+
ATI Radeon 850XT
2 x 512 MB RAM

Hehe, I don't know if theese specs are any satisfying. xD