Chan_zip problem! Weird!

Hello world!

Alright, I’ve got a BIG problem. We’ve just installed our new site, it’s in production, and everything was good, and all of a sudden (after hanging up a call), I get this error:

Aug 26 20:57:33 ERROR[2684]: chan_sip.c:11325 sipsock_read: We could NOT get the channel lock for SIP/!
Aug 26 20:57:33 ERROR[2684]: chan_sip.c:11326 sipsock_read: SIP MESSAGE JUST IGNORED: ACK
Aug 26 20:57:33 ERROR[2684]: chan_sip.c:11327 sipsock_read: BAD! BAD! BAD!

Now, when I type ‘show channels’, I see:
Aug 26 20:57:42 WARNING[4160]: channel.c:787 channel_find_locked: Avoided initial deadlock for ‘0x977e8f0’, 10 retries!

And since then, I’m unable to make a call…

It’s the panic over here… Is there anyone of you geniuses that ever heard of a similar problem?