sysquery: nlookup error on ?

[unknown]

my dns (bind8) was working fine.. then i don't know probably i did something
and
now when i do ndc restart or ndc stop and ndc start it says its starting and
i can't use nslookup and in /var/log/messages i'm geting this

Jul 14 11:20:23 ns1 named[15659]: starting.  named 8.2.2-P5 Sat Nov 27
13:52:39 CST 1999 ^Iroot at blackhole:/tmp/bind-8.2.2-P5/src/bin/named
Jul 14 11:20:23 ns1 named[15659]: listening on [127.0.0.1].53 (lo)
Jul 14 11:20:23 ns1 named[15659]: listening on [63.251.19.66].53 (eth0)
Jul 14 11:20:23 ns1 named[15659]: listening on [192.168.0.66].53 (eth0:1)
Jul 14 11:20:23 ns1 named[15659]: Forwarding source address is
[0.0.0.0].1053
Jul 14 11:20:23 ns1 named[15660]: Ready to answer queries.
Jul 14 11:20:23 ns1 named[15660]: sysquery: nlookup error on ?