Using avast! 4 Professional on Windows7 64-bit machine.
Beginning immediately after installing avast!, I can verify that the iTunes homesharing would not work on this machine unless the real-time shields are turned off. It will connect for about fifteen seconds, and then cease to stream without any error messages.
If I close iTunes and then turn off the shields, the sharing works fine after re-opening iTunes.
Wish I could say which of the shields is the culprit, but haven't been able to determine...
BTW, when I select a time period for reactivating the shields, I have never found them to turn themselves back on. I have had to do it manually.
Any solution to either of these issues would be appreciated. I am holding off purchasing avast! for more computers in hopes that I can receive solutions to these issues.