Just installed OTRS V1.1.1

It is working fine, but for some reason every message is extracted twice from POP3 queue.

The PostMasterPOP3.pl output looks like this:

Message 1/1 (test@hostventures.com)

The two distinct Ticket numbers generated and also two replies sent back to user.

At this point I tried everything I could think about in OTRS configuration.

Any ideas?