On 14.05.2010 22:12, wrote Henrique Fernandes: >> May 14 17:03:40 dict: Panic: file driver-mysql.c: line 482 >> (transaction_send_query): assertion failed: (rows != (my_ulonglong)-1) The patch in http://www.dovecot.org/list/dovecot/2010-May/048705.html fixed this for me.