problem deleting messages with cyrus-imapd 2.3.3-6

after deleting a whole bunch of messages from my INBOX (and
expunging/purging trash), when i inspect
the /var/spool/imap/b/user/bryan directory i notice that the messages
are still there. they are also still in the trash folder as well. they
are no longer displayed in the client (squirrelmail or evolution),
however. this also happens when i copy a message from one folder to
another -- the message no longer shows up in the client but it doesn;t
get removed from the spool directory on the server.

is this a known problem with this release (2.3.3.6)?

bz