Ran into some problems tonight. After a few hours of playing over the course of a few days, WoW suddenly doesn't seem to want to run two clients at once, or something.

I was walking along, and both locked up. Completely. I had to turn off my computer completely. Restarted, loaded back up, and everything was okay for about 20 minutes. Then they locked up again.

Then I'd load up one, which would work fine, but as soon as I loaded the 2nd client, it'd lock up.

Hopefully it's nothing serious, I'm starting to get the hang of it.