Edit: This seems to be an Apple issue: http://discussions.apple.com/thread.jspa?threadID=2553248&tstart=0 Started about 48hrs ago. My mobileme wasn't syncing with my iPhone 4 so I opened the MM control panel (Windows 7) and I see the computer is no longer registered. I logged out/in didn't help. I created a new MM "trial account" same problem. I Uninstalled and reinstalled iTunes. I Uninstalled and reinstalled mobileme control panel app. If I click the "Sync with mobileme button I get a message saying the computer is not registered. I AM able to access MM via the web. I can get to iDisk. I just can no longer sync my PC (Outlook 2007) to MobileMe. This item resolved: Another thing that happened at the same time <coincidence?> was I no longer get the "photo" folder pop opened when I drop my iPhone in the cradle so I can access photos on the iPhone through windows. Nothing has helped. I suddenly no longer have a "registered" computer and the option to register is grayed out. Any suggestions?