I downloaded the beta files at work to save on bandwidth issues at home, took it home, installed it.
Ran fine once though complained about graphics drivers (all up to date yesterday), it also patched itself for 180mb (roughly). And never connected to the server but it ran.
Then next time i tried (having gotten bored of watching the login screen) it complained about missing game files, and needing a reinstall, so i reinstalled it and now it wants to download a 7.6 gb patch. thats the siza of the game. Is it just downloading all over again?