Not quite sure where to post this.
I have a Droid with stock 2.1
Calendar on phone, online Google Calendar, then I sync to Outlook 2007 using Google Calendar Sync PC plugin.
Recently my Outlook stopped syncing to my Google web calendar. As part of the resolution I deleted everything from my web calendar and resync'd.
As far as I remember the web calendar showed some, thought not all, of my outlook items (known issue), now however my web calendar is completely blank.
but... my phone calendar is still populated with all the items BEFORE I cleared the calendar. So now I have 3 calendars, none of them saying the same thing.