Apple today released some server side updates to the MobileMe platform as well as a 10.5.6 Mail.app fix. The MobileMe Serverside updates include:
Contacts
Searching for contacts in a large address book (more than 1000 contacts) is faster and no longer results in a "slow script" browser alert message
Exported vCards with multi-line addresses or notes can now be imported into the Mac OS X Address Book
Adds keyboard shortcut to create a new contact
Additional formatting options for European phone numbers are now supported
