Large queues are killing the mysql server
Related to #1486 (closed) - I was trying to find out the problem and found out that large queues where causing huge amounts of UPDATE statement filling up the processlist, running for more than 2000 seconds. I've attached a SHOW PROCESSLIST
While there was already a queue problem in 4.6, it apparently has grown much much more worse in 5.0, resulting in a non-responsive hub due to the database filling up with queries. The only chance to counter that is restarting the mysql and deleting the outq. Guys, you really have to fix the queue processing.