1.) I returned my ATV2 (720p) to Amazon.com (at 20% lost because beyond the 30-day). However, I still give kudos to Amazon for excepting a return, because as far as I am concerned upgrading to the new s/w level is what starting the problems. I find it EXTREMELY frustrating Apple does not let you return to the n-1 level of firmware. (I suffered some similiar glitches on my iPhone 3GS after upgrading to os 5.0..) You should be able to restore to what you originally purchased, if they are not going to guarantee the firmware upgrade are going to regress your product. Unless, its the marketing ploy to force a hardware upgrade.
2.) I purchased a new ATV2 (1080p) at BB with a protection plan (Warranties are typically useless but I've found with consumer electronics in the passed 5 years, this has saved me numerous times, and the one time I skipped at BB, a mid-range Samsung ($450.00) blu-rray at the time cost me big time. A bad firmware upgrade which they change w/o changing the version no. bricked the machine. Lesson learn...don't leave on auto upgrade. I was not alone on that either. I digress.
3.) Dropping the password for the Wifi SSID is still there. ( reported this bug on a separate discussion). If you look what SSID is configure you must retype the password each time. (unlike an iPhone or iPad)
4.) I was able to run audio for over eight 8hours using my iPhone w/Apple Talk. (no video tested yet)
5) I was NOT able to get iTunes/PC Windows XP to even to even bring up the on APPLE TALK) indicator) although the ATV2 found the library after restesting. (Still no APPLE TALK icon on iTunes (latest version).
6.) Remote App seems to be working ok when running an APPLE TALK feed from the iPhone.
7.) Remote App does NOT find the my libray if I select from iTunes.
8.) Remote App does NOT find my Denon APPLE TALK source.( Perhaps I can only stream TO the denon. Airplay on iPhone finds the denon-receiver
9.) Resetting iTunes yet again....still no APPLE TALK icon, after turning on Home Sharing
10.)Remote App was able to find my Home Share library.... However when in hit the swirly i AppleTalk on the iphone Remote App it does not set the music to the ATV2, but does play havoc on the video on my computer monitors. I cannot select where to broadcast... so it plays/and can control audio on iTunes but I can't see the monitors.
11.) I still need to test Denon AVR-3311CI Apple Talk upgrade. (The Denon remote app does not seem to be able to get to all the NET/USB features...). I will need to track down the ip and try the GUI app.I though with APPLE TALK installed on the denon AVR I was suppose to be able to transmit audio to various APPLE TALK receivers (ATV, Airplay speakers, etc). I believe there is a disclaimer from from Denon video is not supported.
Anyway... the combinations do Not seem to be thoroughly tested when it comes to Home Sharing. Especially, from iTunes itself. So much for the simplicity of factor of installation Apple used to brag about.