At the November MySQL User Group, Patrick Galbraith ran into a problem where "binlog-do-db" was duplicated. It manifests itself like this:(copied from http://lists.mysql.com/replication/607) master my.cnf:binlog-do-db=db1slave my.cnf:replicate-do-db=db1;Relevant show slave status outputReplicate_Do_DB: db1;,db1;When db1 is modified on master, Read_Master_Log_Pos and Relay_Log_Pos dochanges, also