[Asterisk-Users] channel_find_locked

[Marcus Deluigi (intern)]

I've been playing around with AgentCallbackLogin, etc.
Now I get this message  
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Nov 22 17:31:45 WARNING[1889]: channel.c:784 channel_find_locked:
Avoided initial deadlock for '0x
8135b00', 10 retries!
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whenever a user tries to dial into the system. Restarting asterisk and
even rebooting doesn't help. I reduced extensions.conf, agents.conf &
queues.conf to the absolute minimum with no effect. 
show channels prints:
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Channel              Location             State   Application(Data)
0 active channels
0 active calls
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How can I get rid of this message?

Greetings,
Marcus