Well, this is broken for me too. No Calendar or Contacts sync to the phone. But they do sync back to Outlook. Interestingly enough, I did get SOME old calendar items to sync to the phone when I set the date range to something like 5 years. But, nothing recent. They say this isn't officially supported on the n900, but shouldn't the PC Suite software be working on its' own? I sync with Outlook, and open up the PC Suite calendar and that's blank too. Doesn't make any sense - this worked great just last week. I guess I'll try to remove some of the packages I've installed on the phone and see if one of them is causing some sort of interference. I sort of have to use PC Suite to sync my work calendar. They don't allow ActiveSync over the Internet.