asterisk users - Nov 2005 - channel_find_locked

I've been playing around with AgentCallbackLogin, etc.
Now I get this message  
---
Nov 22 17:31:45 WARNING[1889]: channel.c:784 channel_find_locked:
Avoided initial deadlock for '0x
8135b00', 10 retries!
---
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:
---
Channel              Location             State   Application(Data)
0 active channels
0 active calls
---

How can I get rid of this message?

Greetings,
Marcus

Hi. Could you help me with this warning?
 channel_find_locked: Avoided initial deadlock for '0x8218ac0', 10
retries!]
I have no ideea what causes it...
It seems to appear only when i make a call...