Bind9.5.1b1 missing from&extra records in (hints)

[iman]

Dear Admins
I installed bind9.51b1 on solaris9,after start it i see that:
tail -f /var/adm/messgaes &:
Aug 24 03:23:04 ns2-lct named[420]: [ID 873579 daemon.warning]
checkhints: B.ROOT-SERVERS.NET/A (192.228.79.201) missing from hints
Aug 24 03:23:04 ns2-lct named[420]: [ID 873579 daemon.warning]
checkhints: B.ROOT-SERVERS.NET/A (128.9.0.107) extra record in hints
Aug 24 03:23:04 ns2-lct named[420]: [ID 873579 daemon.warning]
checkhints: J.ROOT-SERVERS.NET/A (192.58.128.30) missing from hints
Aug 24 03:23:04 ns2-lct named[420]: [ID 873579 daemon.warning]
checkhints: J.ROOT-SERVERS.NET/A (198.41.0.10) extra record in hints
Aug 24 03:23:04 ns2-lct named[420]: [ID 873579 daemon.warning]
checkhints: L.ROOT-SERVERS.NET/A (199.7.83.42) missing from hints
Aug 24 03:23:04 ns2-lct named[420]: [ID 873579 daemon.warning]
checkhints: L.ROOT-SERVERS.NET/A (198.32.64.12) extra record in hints

why it takes these errors? and how can i fix that?
Regards
Habibi