Does anyone else have this problem?

I schedule an appointment in the calendar and then assign it a category.
When I save & close, it automatically places a reoccurrence on it. I have to
go back in and take off the reoccurrence, save and close. Sometimes I have to
go through this 3 or 4 times before it finally takes. No problems when not
assigning a category though.

This is very frustrating as I live from my calendar! I check the updates
almost daily hoping there will some day be a patch but maybe it's just me.