Whether you spent the entire weekend repeatedly wiping on the same instance, you didn't make your goal of level 40 thanks to being ganked, or you couldn't play WoW at all, let's let it all out.
Personally, I was playing some low-level battlegrounds and it was a really frustrating experience. The team was filled with players who had rolled Horde "because Horde always wins BGs", not realising that players still have to work for the win. After playing a couple of matches and logging off in frustration, I came back later only to find people who were even worse. No amount of helpful explanation or guidance worked, and the Alliance must have been laughing their heads off.