Good news, Windows PC users: Apple's MobileMe News blog has just announced that they've finally put some shove into their Windows-side push:
We've recently improved the performance of MobileMe syncing with Microsoft Outlook on Windows. Contacts and calendars automatically sync whenever a change is made in Outlook, and likewise when a change is made on the web or from another device. To take advantage of this improvement make sure you're using iTunes 8.0.2 and MobileMe Control Panel 1.3 and that you have "sync" set to occur "automatically" in the Control Panel.
Anyone out there tried it yet? How's the performance?