On Wed, 2005-08-03 at 15:19 -0700, Marc Perkel wrote:

If a user was accessing their mailbox with POP and another process accessed it with IMAP - would that create an error? Trying to track down an unusual bug.

Shouldn't cause any errors, except the POP3 client could of course download and delete all the mails and cause them to be lost from the IMAP client.