This is a wierd one. On my wife's Treo, sometimes when she opens a calendar entry to edit it, upon closing it shows an entry from 4-6 years past. When going back to viewing (using Agendus), the entry is fine. However, if you use the native Calendar application, the old entry shows up.

Deleting it in the Calendar application, then causes the correct item to appear in the native application.

This happened in Agendus 10.07 and is still happening in 11.01.

I've deleted the legacy db but that didn't fix it.