Outlook tasks won’t stay in category

Hi,

I’ve got the strangest problem. I have this user who keeps saving various Outlook tasks, and in the morning they’ve “jumped” out of the category setting, and move to none.

Using Outlook XP on Excahnge 2000. The tasks actually belong to another user (which she puts in through “Open other user’s folder”).

I believe this is happening only to her, and only on a few categories.

Please help,

Ethan