Several times in the past my Outlook 2007 calender has stopped sync-ing to my iPhone. Typically this has been caused by installing a new version of iTunes, and fixed when the NEXT "updated" version came out... Of course the iTunes sync. claims to have been successful even when it is NOT sync-ing the calendar. About a week ago, me having done nothing (that I can recall) to change my setup the calendar stopped sync-ing again. I get no warnings from iTunes and it still syncs contacts and notes. Are there any diagnostic tools that might help point me to the issue? I'm currently running iOS V4.1 / iTunes V10.0.1.22 / Outlook 2007 I could try updating to V4.2.1 / 10.1.xx but I hesitate to do that with the sync. broken.... Any help / suggestions appreciated!