After installing and updating a brand new AppleTV 2 my iTunes MBP can communicate with my AppleTV but AppleTV does not see my MBP w/ Lion 10.7.2. While in iTunes I can choose AppleTV and play a song that is in iTunes within AppleTV. When I highlight Computers on the main menu my laptop is not displayed. I have turned on Home Sharing on and off a few times both on my laptop and AppleTV. I have disabled the Firewall within System Preferences. What may be causing iTunes on my laptop to see the AppleTV but AppleTV not seeing my laptop? Thank you for looking.