MacRumors.com

After a few days of growing pains, it appears that MobileMe is now online at Me.com. The service has been up and down over the past few days while under heavy load. While Apple had initially released a MobileMe updater for Mac OS X, they had temporarily pulled it during the ongoing server issues.

Today, the MobileMe updater appears to have returned to Software Update as version 1.1:

The Mac OS X Update For MobileMe is recommended for users running Mac OS X Leopard 10.5.4 and includes general system fixes that enhance your Mac for MobileMe.

The web-based service replaces .Mac and offers web-based email, calendar, addressbook, online storage as well as "push" sync services.

We've opened a MobileMe forum to handle questions and discussion about this new Apple service.