On Tue, 2010-11-16 at 11:43 +0100, Jan Behrend wrote: > Nov 16 11:25:07 imap-mgt dovecot: imap(username): Panic: file > istream-header-filter.c: line 520 (i_stream_create_header_filter): > assertion failed: (ret < 0) http://hg.dovecot.org/dovecot-2.0/rev/e7299f187938 hopefully fixes this.