why does outlook ask twice for .pst pw?

[Jason]

After six months I thought it was time to compact my .pst file. I
clicked Data Management and, to my surprise, there was nothing listed.
Normally, I'd click on the Personal Folders entry and Compact. So, I
clicked Add and added my .pst file. Now Outlook prompts for the password
twice when I start it. What's misconfigured?

Thanks,

Jason