Apple’s going to be taking down MobileMe starting at 10PM PST tonight for some scheduled maintenance. That means that syncing, online calendars and contacts will all be offline while Apple makes some updates to their offerings.
Apple plans on having the work completed by 11PM, and having MobileMe operational again by 11:01 PM.
Don’t fret. You’ll still have access to your information locally on each machine that you have connected to your MobileMe account. You just won’t be able to sync newly inputted information during that time.
If you suspect that you need to sync before the servers go down, make sure you do it before the 10-11PM window starts.
Article Via MacObserver