[Dovecot] lock file 2nd attempt for help

[Obantec Support]

Hi

my last post got no replies so i am trying again.
FC3 dovecot 1.0 stable, 1 user has a lock file using mbox under
/var/spool/mail/username

from the lock file the pid files are

      File Descriptor Type File size Inode Path
      Current dir Directory 4096 6426371 /home/domain/domain127
      Root dir Directory 4096 2 /
      Program code Regular file 1212428 1229832
/usr/local/libexec/dovecot/pop3
      Shared library Regular file 108332 851976 /lib/ld-2.3.4.so
      Shared library Regular file 1524828 851978 /lib/tls/libc-2.3.4.so
      Shared library Regular file 16908 851993 /lib/libdl-2.3.4.so
      Shared library Regular file 47496 852018 /lib/libnss_files-2.3.4.so
      mem-w Regular file 12352 6471692
/home/domain/domain127/mail/.imap/INBOX/dovecot.index.log
      mem-w Regular file 35840 6471779
/home/domain/domain127/mail/.imap/INBOX/dovecot.index.cache
      mem-w Regular file 2504 6471769
/home/domain/domain127/mail/.imap/INBOX/dovecot.index
      0u sock
     69748498 can't identify protocol
      1u sock
     69748498 can't identify protocol
      2w fifo
     69748504 pipe
      3r Character special
     578 /dev/urandom
      4uw Regular file 2504 6471769
/home/domain/domain127/mail/.imap/INBOX/dovecot.index
      5uw Regular file 12352 6471692
/home/domain/domain127/mail/.imap/INBOX/dovecot.index.log
      6uw Regular file 35840 6471779
/home/domain/domain127/mail/.imap/INBOX/dovecot.index.cache
      7uw Regular file 2368595 2343048 /var/spool/mail/chelan


Can someone explain why this user gets a lock file?

Mark