Hello, I just recently upgraded to the most recent 4.5 OS build ( and noticed that my calendar has gone psychotic on me. Random events are duplicating, all day events (birthdays, holidays, trips, etc.) have been unchecked as "All Day Events" and show as from 12am to 11:59pm on each day and some of the birthdays from my Address Book have not automatically loaded into the calendar.

I don't have a sync with Google, Outlook or anything of that sort. Just....the calendar on here so can anyone shed any light as to what happened and how I can fix it? Without wiping the calendar and starting over, ihopeihope.