I noticed this bug a while back with the Crespo4g ICS builds but thought it had been fixed. Maybe it just didn't strike again until last night. Anyway, if I create a calendar event on the exchange server with NO reminder set, when it syncs to my phone it will have a reminder of 0 minutes. This did not happen with the stock rom. I have verified this does not happen when it syncs from my Google calender. Thanks!