Just upgraded from Office 2000 to Office 2003. When a new entry is typed into the calendar, it disappears. When an existing entry is changed, it does not reflect the change to a new date or time. The .pst is under 500 megs. The old .pst before the upgrade was too large, hence the upgrade. I have repaired, patched and downloaded everything off the Microsoft website. Any ideas would be greatly appreciated. Thanks in advance, Cindy