Outlook 2000 Archiving Issue

I have a user with about 30 subfolders under her Inbox. The
Inbox plus subfolder are configured to auto-archive every
14 days. For whatever reason the auto-archive settings
reset themselfs after a short period of time. My first
question would be: does Outlook 2000 has problems handling
so many subfolders?
Any suggestions and hints are greatly appreciated!