Hello -
I just upgraded my master to 4.0.20 from 3.23.54 (ran the mysql_fix_privileges script) My slaves are all 4.0.[16,17,18] All seems well EXCEPT the Slave_IO_Running will NOT start. All my slave a stuck at the point prior to the upgrade. Error logs reveal nothing out of the ordinary. I'm baffeled, anybody have some insight??? Thanks Michael