This bug was fixed in the package dovecot - 1:1.1.11-0ubuntu8
--------------- dovecot (1:1.1.11-0ubuntu8) karmic; urgency=low
* dovecot-sieve: (LP: #264306) - Fix an assertion failure on messages that have a bad header.
-- Mathias Gug <email address hidden> Wed, 09 Sep 2009 21:31:20 -0400
This bug was fixed in the package dovecot - 1:1.1.11-0ubuntu8
---------------
dovecot (1:1.1.11-0ubuntu8) karmic; urgency=low
* dovecot-sieve: (LP: #264306)
- Fix an assertion failure on messages that have a bad header.
-- Mathias Gug <email address hidden> Wed, 09 Sep 2009 21:31:20 -0400