Hey all,
Well, I was relieved to see this thread and know I wasn't alone in my frustration. I did get mine working somewhat, so perhaps this will help.
In my case, iTunes had reverted to not synching any of the items on the Info tab. I re-enabled this and did a sync, which got the Mac and iPhone in sync fine, as you'd expect.
HI BIGGLESWORTH - HOW DID YOU RE-ENABLE SYNC ON YOUR IPHONE?
I had already reset the sync data through the MobileMe preference pane, overwriting MobileMe data with the information from my Mac. This had no effect on the online calendar though. After I'd synched the iPhone overwriting its contacts and calendar info from the Mac, the information online was updated.
WHAT ABOUT WHEN YOU INPUT DATA INTO YOUR IPHONE? IS THAT OVERWRITING YOUR MOBILE ME (MM) CONTACTS & CALENDAR?
I tested it by adding an event in iCal, it showed up on the iPhone a few seconds later. I've tried it a few times now and it seems to work fine, showing up just as the auto sync gets going.
The online MobileMe calendar doesn't seem to be picking up the changes and changes I make on the site don't show up on my phone, so I'm not sure what's up there.
THANKS FOR AT LEAST POSTING SOME ATTEMPTS AT SOLUTIONS. WHAT I'M STRUGGLING WITH IS THAT WHATEVER NEW CONTACTS I'M PUTTING INTO MY IPHONE IS LATER WIPED OFF THE IPHONE WHEN MM SYNCS! ANY SUGGESTIONS?
Anyway, I'm happy enough for now, I hope this helps some of you.
Good luck!