Haven't been able to find anywhere really to place a dark souls thread so I figured maybe my buddies from mmochamp could help me out!!! ^.^

So back in Demon's Souls I was pretty beasty in PvP. It was fun, like really freakin over enjoyably fun.
I pre ordered Dark souls, played it a bit (was in a crappy situation back then) but not much, picked it back up last month, beat the game and have been trying to get into PvP. Unfortunately for me (and apparently many others) there's a huge lag fest there.
the Host will be like 15 feet in front of me and then suddenly back stab me, and I'm sitting here like wtf?

So, basically, my first question is, how do I deal with that kind of lag? How do I counter?
The other thing, and I think is really just my luck, is running into two friends (same two people every time) back in the forest hunters covenant who just wreck face. Swinging a dragon's tooth 15 times straight without tiring themselves out ~.~ what is this nonsense. lol

I play on PS3 btw, idk if it really matters.