Serious Bind issue

[Steven Bens]

Dear mailinglist members,

I have an serious issue with bind.

System information:
Dual P3 1 GHz
6.1-RELEASE-p12 FreeBSD
SMP kernel

I'm running BIND 9.3.2 on this box (the one that is standard delivered with
6.1)
And when the named is running for a copple of hours. Bind doesn't accept TCP
connections
and i see this in my /var/log/messages:

Feb  8 06:44:13 gms01 named[417]:
/usr/src/lib/bind/isc/../../../contrib/bind9/lib/isc/unix/socket.c:1876:
unexpected error:
Feb  8 06:44:13 gms01 named[417]: internal_accept: accept() failed: Invalid
argument
Feb  8 06:46:55 gms01 named[417]:
/usr/src/lib/bind/isc/../../../contrib/bind9/lib/isc/unix/socket.c:1876:
unexpected error:
Feb  8 06:46:55 gms01 named[417]: internal_accept: accept() failed: Invalid
argument
Feb  8 06:47:43 gms01 named[417]:
/usr/src/lib/bind/isc/../../../contrib/bind9/lib/isc/unix/socket.c:1876:
unexpected error:
Feb  8 06:47:43 gms01 named[417]: internal_accept: accept() failed: Invalid
argument
Feb  8 07:00:08 gms01 named[417]:
/usr/src/lib/bind/isc/../../../contrib/bind9/lib/isc/unix/socket.c:1876:
unexpected error:
Feb  8 07:00:08 gms01 named[417]: internal_accept: accept() failed: Invalid
argument
Feb  8 07:00:13 gms01 named[417]:
/usr/src/lib/bind/isc/../../../contrib/bind9/lib/isc/unix/socket.c:1876:
unexpected error:
Feb  8 07:00:13 gms01 named[417]: internal_accept: accept() failed: Invalid
argument

Does anybody knows what this is ?
I have an exact copy this server running next to this one.
But that server is not SMP and it doesn't have this problems.

Kind regards,

Steven Bens
CEO Unix-Solutions
www.Unix-Solutions.be