The main menu and some other screens(not the game itself, though) some times will suffer from artifacts and other minor graphics glitches. This is the only game I have that experiences this sort of behaviour, and I'm reasonably sure it's not my GPU.
Secondly, the game will freeze up in various loading screens randomly. I'd play one battle great, start loading the next one and there it would freeze. Program becomes unresponsive, has to be closed with the task manager.
Thirdly, in the middle of the game it sometimes crashes to desktop with an error message I forgot to copy. I would say this is more rare than the previously mentioned freeze, but as it arrives after the place where it can freeze, that would be a false statistic.
Finally, I'm yet to join a multiplayer game. Tried dozens of times, and it either hangs or finds nothing for over an hour of waiting, or several times of cancelling after nothing comes up or joins in 10 minutes, as the game has no unresponsive autokick.
I have the latest version of the game, motherboard drivers, GPU drivers and have tried with Impulse both on and off. No other games I have experience this sort of behavious, and I have a lot of games. I'm 96% sure it's not my box that's at fault.
In case you want to know, it's a Q6600, with a 512 MB GeForce 8800GTS, 4 gigs of RAM and it's all running on Windows XP x64 Professional.
HALP!