asterisk users - Oct 2006 - sip agent stuck in queue even after restarts

This is the first time I have used a sip device on a queue. Iogged in under the
extension and now I can't logout. No kidding. I have restarted asterisk with
persistant agents=off and also done a show agents. It shows no agents logged on
and I am still receiving calls. To complicate things I am using Flash operator
panel to see logged in agents and it has, at best, been sporadic. I have had no
problems for the last six months and now I am in a hole. I beleive that the
agent is stuck in the astdb somehow but every attempt I have made to remove it
fails. Can any one see what I might be missing?
 
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