It is probably timing out. I had this happen and made a wrapper around POP3 to keep track of the deleted msg_ids and check to see if the connection was lost before the destructor and if so, reconnect and delete them again. I didn't get around yet to putting it up on CPAN but perhaps I can clean it up for general use and posted it later this week.

-Lee

"To be civilized is to deny one's nature."