No Home Sharing since iTunes 10.6.1 (Windows 7)

I figured I'd start a new thread for people like me who had their Home Sharing BREAK since upgrading to iTunes 10.6.1 (it was working ok with 10.5, but I had that non-alphabetical bug with TV Shows on the AppleTV). I have:

Windows 7 (64-bit)

iTunes 10.6.1

iPhone 4

iPhone 4S

iPad 1 (x2)

iPad 3

AppleTV 2 (x2)

AppleTV 3 (x1)

The problem is across devices. In order to fix, I have to go down to my Windows PC and turn off Home Sharing, then turn it back on.

I've tried turning of IPv6 on my network settings, to no avail. I've tried resetting my AppleTV - no help. The only thing left to do is completely uninstall all Apple products and reinstall from scratch. Anyone have a guide on how to do this? I don't want to lose my playlists or playcounts. HELP APPLE! This needs to be addressed!