edit /usr/sbin/automysqlbackup (wherever your /etc/cron.daily/automysqlbackup points)
find the OPT="--quote-names" line (about line 354)
Change it to
OPT="--quote-names --events --ignore-table=mysql.event"
OR, (Based upon additional reading of responses):
one of:
OPT="--quote-names --events"
OPT="--quote-names --ignore-table=mysql.event"
The original line suppresses the warning and ignores the table (redundant).
If you wish to have the table in your backup, don't ignore the table, just use --events
If you don't care about the table, ignoring the table will also suppress the event message.
What's optimal? Depends on if you use events and require them to be restored.
http://dev.mysql.com/doc/refman/5.1/en/events-table.html
Reference: http://bugs.mysql.com/bug.php?id=68376
