What Servers Are You On in World of Warcraft?

[Captain tycho]

Oh, and is anyone getting this problem occasionally?
When trying to log in, I get an error saying the game version is mismatched. But the funny thing is, a few hours afterwards, the game will somehow reset to 800x600, and allow me to log in again.

Are you using any custom/modded UI? They need to be updated each patch.

Nope. But the problem goes away within a little while, like I said, and only rears its ugly head every few weeks. Very weird.