Hi,
also happens to me, with Windows 7-64b, latest itunes installed and iPad updated to current iOS version (i achieved to sync once in 15 days after desabling antivirus NIS 2011, but never more achieved...)
It is supposed that today's upgrade on iTunes version was addressing this kind of problem, but not at all.
It is funny, but my ipod nano it is synced perfectly, not any problem. but ipad starts connecting, let's iTunes stuck for 4-5 minutes and later nothing into iTunes, no device.
I have tried all solutions, including full uninstall of itunes and all the stuff related up to 9 times in the last days, but nothing to do.
Do I need to pay for Apple care for a problem that have caused themselves? Are they going to do something to address this upsetting problem with the sync? Maybe it will be a solution to restore completely my ipad?
Let's see if some on can find a workaround...
C.