I am trying to sync my ipad with my PC. this has worked before but has now thrown a wobbler. First it offers me an update in the ipad software. If I accept it says, after a short attempt, that it can not progress because a sync is in progress. If I refuse it goes through the sync process then, after about 5 minutes, at the end of satge 5, it flashes up the message "Itunes could not back up the Ipa "ipad" because a session could not be started with the Ipad." When I accept this the next message is sync complete but nothing has been updated. I have re-booted the PC to see if that is the answer. Any ideas?