"Call of Duty: World at War just saw its release yesterday, but if you bought the PC version, it came with some bugs. The nice people at Treyarch noticed the problems early enough, allowing you to download a pretty large patch, which will fix a number of the issues, right alongside your purchase.
Some of the most important repairs will be modifcations to co-op, single player, and multiplayer, a new patch notifier, holes in multiplayer maps fixed, and spawning improvements as well as weapon balancing. As we said earlier, the patch needs a pretty hefty amount of space on your hard drive for a quick fix, 317 MB, but no matter the size, it seems like a must to download for the best gameplay experience."
TheGameReviews