I'm running mysql 5.0. I've set up a slave and got it running. It's reading updates from the master and writing them to its relay-log. If I "strings" or "mysqlbinlog" the relay log, new sql statements show up as expected. However, the sql_thread is not executing these statements, even though the thread is running, there are no error statements, and both the bin-log counter and relay-counter are being incremented.