I just purchased the new imac 21.5 inch last Friday. I'm noticing some strange performance issues that appear to be sound related. I use computer for software development (mostly just using terminals), listening to iTunes, iPhoto, and to play Wow. On Saturday, I logged into
ichat AV to chat with my bud and play wow, played for about 2-3 hours, no issues at all. I may not have rebooted yet ...