A chat log discussing various community concerns in World Of Warcraft is up at WorldOfWar.net today. It covers quite a few varied topics and is certainly worth having a look at.
Q: What are you going to do to prevent the PvP "griefing"?
Katrica: It is our intent to stop griefing on the design side of the game vs. having GMs intervene whenever possible. PvP changes are already in the works which will stop many of the griefing problems that have been popping up. Will it stop all of the problems? Probably not, which is why we continue to test, look at constructive feedback and make necessary changes.
WorldofWar.net: Basically, Blizzard is saying that they are aware of the problem and are doing what they need to to resolve it.