Okay, folks, I've read about as many articles, forums posts, blog posts, etc. about this problem, and everyone seems to have either solved the problem using measures that I have attempted, or never gotten the problem solved.
I am using iTunes 10.5.2.11
Windows 7 Professional 64-bit
NO Windows Firewall, or firewall of any kind running (I have a Sonicwall).
iPad 2 running the latest OS update.
WiFi is on the same subnet as my PC.
I WAS able to sync wirelessly a couple of weeks ago, but then it stopped working.
I have rebooted the computer.
I have synced via USB. While connected, I disabled "sync this device over wifi," applied the changes, synced. Then re-enabled "sync this device over wifi," applied and synced again - all wired.
I have also rebooted the iPad prior do these measures.
Any suggestions? I have seen an equal number of people who have been able to resolve the wifi sync not working, as I have seen people who have never since gotten it to work.
Hope someone can help.