If you're new to BF3, you'll need to be tolerant of the large number of cheaters that are about. PunkBuster appears to be completely ineffectual in identifying these players. What you'll mainly see is a lot of single-shot kills (from ludicrous distances), and invulnerability; The best I saw was the other day on Scrapmetal. One guy was running along the front of a building. He was approaching a player who was shooting him. He was pursued by a player who was shooting him. And I was shooting him from the opposite building. He took so much damage he should have been blown to bits, but still he kept on running! That UK server was rife with this type of thing AND was supposedly running PinkBuster. I've frequently been killed by an apparently invulnerable soldier and then seen in death-cam that they are on 0% health and still fully active, no attempt at healing or any character yelling about being chewed up, etc. More often, you'll shoot someone, see the hits making them waver, but after they then turn around and do you in with a single shot, you'll see they are on 100% health. It's actually really getting on my tits lately as it seems to be on the rise. I can't wait for Arma3.