Confused iPhone wi-fi syncing to two iTunes libraries
My iPhone is confused. It is syncing to two different computers. I have always had it synced to my home MacBook, and only charge it via USB during work on a Windows7 computer. Never a problem in three years. Now with ios5 and iTunes 10.5, after setting up automatic wi-fi syncing with the Macbook at home, I now see that it is also set-up to auto-sync with my work windows computer. On the iPhone, both computers are individually listed in the Settings/General/iTunes Wi-Fi Sync, and I can sync to both and get no warnings, etc. Funny, the windows computer does not have wi-fi capabilities, but when I do connect it via cable to charge, i can initiate and complete a wi-fi sync. There are no apps at all on that iTunes. What is it syncing?
Also, I never had music on my phone before, and I tried to add a few albums from my home iTunes library yesterday. When I pressed sync, iTunes said the phone was synced to another iTunes library. To continue, it would erase my iPhone completely and load everything from that computer. But, that's where all of the content came from in the first place!
How do I remove the windows work computer from the Settings/General/iTunes Wi-Fi Sync page so only my home MacBook is listed, and clear up all the confusion my iPhone is having?
Thanks!
iPhone 4, iOS 5