I have about half a dozen calendars, and suffered a syncing meltdown earlier on thanks to the way I was creatively using Google Calendar and Plaxo. I think Plaxo did some stupid circular reference and cause a calendar with 270 events to blow up to 3000 almost all duplicates - until it hit some limits and started to complain. This problem was pushed onto MobileMe (.Mac then).
Found a nice dedup script: http://www.nhoj.co.uk/icaldupedeleter/
This nicely took care of the problem on the Mac.
So I proceeded to reset the data on MobileMe. Unfortunately, this didn't cause the data on MobileMe to reset, and that furthermore pushed this bad data onto my iPhone.
Steps I've done:
1) Reset data on MobileMe and push it from the Mac. Bad data persists on MobileMe.
2) Remove all calendars on MobileMe and push it from the Mac. Bad data reappears. Even a calendar that I have removed on the Mac reappears on MobileMe. Seems to me that MobileMe was picking from some old data and not the new data. Maybe MobileMe keeps a backup copy and insists on restoring that because some aspects of the syncing it doesn't like.
Occasionally, I would get "Calendars could not be synced due to inconsistent data.", but usually not on the first time I do this in a session (I've tried the above many times).
Found a nice dedup script: http://www.nhoj.co.uk/icaldupedeleter/
This nicely took care of the problem on the Mac.
So I proceeded to reset the data on MobileMe. Unfortunately, this didn't cause the data on MobileMe to reset, and that furthermore pushed this bad data onto my iPhone.
Steps I've done:
1) Reset data on MobileMe and push it from the Mac. Bad data persists on MobileMe.
2) Remove all calendars on MobileMe and push it from the Mac. Bad data reappears. Even a calendar that I have removed on the Mac reappears on MobileMe. Seems to me that MobileMe was picking from some old data and not the new data. Maybe MobileMe keeps a backup copy and insists on restoring that because some aspects of the syncing it doesn't like.
Occasionally, I would get "Calendars could not be synced due to inconsistent data.", but usually not on the first time I do this in a session (I've tried the above many times).