Michael Santovec wrote:
> Based on what you've said, the likely culprit is that the POP3UIDL.DBX
> (OE5+) file is corrupted. This is used to track previously downloaded
> messages when you leave messages on a POP3 server (Tools, Accounts,
> Mail, Properties, Advanced). However, the file gets updated even if you
> aren't leaving messages on the server. Delete the file with Outlook
> Express or Internet Mail closed. (On Win2000 you need enable the
> display of Hidden or System files in the folder options and XP you need
> to use the advanced options to find Hidden or System files.) The next
> time all mail on the server will be downloaded. But after that the file
> should function correctly again.
>

Thanks, Michael. Problem solved.