[otrs] What is doing this ?

I think I found out why messages to otrs go into the "bit bucket". When reading PostmasterMailbox.pl I cant find anything writing to this bogus location. Im pretty sure the double slash is causing the permissions problem. Anyone know where to look ? ERROR: OTRS-PostMasterMailbox.pl-10 Perl: 5.10.1 OS: linux Time: Tue Jul 19 15:33:23 2011 Message: Can't write '/opt/otrs/var/tmp/CacheFileStorable//CacheInternalTicket/5ec70085363cb17f98 f495d25c39dd12': Permission denied