Originally Posted by mundyb
Are you using BIS or BES? If you are using BES maybe you are deleting them off the server before your Outlook has a chance to get to them, or with BIS maybe you just need to do a manual Send/Receive.
Can't do a manual send/receive on a BB. It is all push.
One thing to try is to make sure you have "Leave Mail on Server" checked in your Outlook setup under "Advanced"