Crashed Bind

[Juan O]

Hello.
In my company we've got a bind v9.6.0-P1 running on a RHEL 5.4 server. 
Today the named process stopped. I revised the logs and I could see:

19-Nov-2010 13:21:32.572 query.c:1769: INSIST(!dns_rdataset_isassociated(sigrdataset)) failed
19-Nov-2010 13:21:32.572 exiting (due to assertion failure)
It's the first time I've seen this error. I started the named process without problems but, must I be worried about that? 

Is it a known bug/issue?

Thank you very much.




 		 	   		  
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