intermittent ndc startup

[ns at linuxplanet.nu]

I am running named 8.2.2-P5 sometimes when I restart named (using ndc restart), 
it fails to startup correctly, although ps reveals that named is running 
however, nslookup or dig fails to resolve.  After killing and restarting it 3 
to 5 times then it kicks in and starts up.  The message file below reveals that 
certain files can't be open I have checked the permission and it seems ok and 
the files are present. what gives?

One thing I have noticed is that the files in '/usr/local/etc' below are 
missing whenever named fails to resolve, however after starting named several 
times these file reapair by magic and named resolves fine.

-rw-r--r--   1 root     other          4 Jun 11 17:07 named.pid
srw-------   1 root     root           0 Jun 11 17:07 ndc

ed[450]: starting.  named 8.2.2-P5 Fri Feb 18 19:56:45 ES
T 2000
Jun 11 17:04:13 ns0     steve at tensor.vnet.net:/free1/SOURCES/SPARC2.6/BIND/src/b
in/named
Jun 11 17:04:13 ns0 named[450]: slave zone "beer.example.com" (IN) loaded 
(serial
 20010117)
Jun 11 17:04:13 ns0 named[450]: db_load could not open: db.root: No such file or
 directory
Jun 11 17:04:13 ns0 named[450]: db_load could not open: ns0.example.com.db: No s
uch file or directory
Jun 11 17:04:13 ns0 named[450]: slave zone "10.in-addr.arpa" (IN) loaded (serial
 2000030300)
Jun 11 17:04:13 ns0 named[450]: db_load could not open: 0.0.127.in-addr.arpa.db:
 No such file or directory
Jun 11 17:04:13 ns0 named[450]: db_load could not open: 184.135.172.in-addr.arpa
.db: No such file or directory
Jun 11 17:04:13 ns0 named[450]: db_load could not open: 132.135.172.in-addr.arpa
.db: No such file or directory
Jun 11 17:04:13 ns0 named[450]: listening on [127.0.0.1].53 (lo0)
Jun 11 17:04:13 ns0 named[450]: listening on [172.135.132.202].53 (hme0)
Jun 11 17:04:13 ns0 named[450]: Forwarding source address is [0.0.0.0].53
Jun 11 17:04:13 ns0 named[451]: Ready to answer queries.
Jun 11 17:04:15 ns0 named[451]: No root nameservers for class IN

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