Dropouts while streaming audio

I have searched for appropriate prior messages but none are quite right. I am virtually positive this is not a network problem. There seems to be a problem when iTunes streams directly to ATV, but Airfoil seems to avoid this. It also provides a way, I think, to check where the problem is. When ATV drops out, Airfoil to my iPod keeps working. I feel if it were happening at the network level both would drop out.

I have found, using iTunes directly, or via Airfoil that I may run for hours without problems. Then I get a couple of second dropout. Airfoil tends to recover ok. iTunes starts to degrade and eventually I may lose the signal completely. The device is still listed in iTunes and on the DHCP list of my router, but no traffic is passed. The only cure is to reboot the ATV and start over.

I thought this might be my ATV, but apparently this is a common situation. Nevertheless, I am taking it into the store this afternoon to see if anything can be done.