I have an Apple TV and a new Airport Extreme running in 802.11n mode.
When I'm doing a large sync to the Apple TV, every few minutes the internet connection dies for just long enough to kick me off of IM. I'd say its about 15 seconds from the time the connection dies until it comes back. The internet connection at the modem is fine, and this only happens when I'm doing a large sync.
Do I have a bad Airport? Shouldn't it be able to handle this flawlessly?