Latest BIND for Debian and TTL

[Nathan Ridge <ridgey@mackay.matilda.net.au>]

Hey guys, updated all servers to new bind and qpopper, one problem am having
is, under the new version ( 8.2.2 i think ) the name record format must have
changed, cause every time the name server restarts it gets an error:

Dec  8 10:06:42 webserver named[18810]: Zone "bennettpartners.com.au" (file
benn
ettpartners.com.au): No default TTL set using SOA minimum instead
Dec  8 10:06:42 webserver named[18810]: master zone "bennettpartners.com.au"
(IN
) loaded (serial 1999120801)

I dont know how critial Time To Live is, i have looked up the man pages etc,
but caught find a Template for the new ones, this is how the name records
are formatted.:

$ORIGIN com.au.
bennettpartners IN  SOA     bennettpartners.com.au.
root.bennettpartners.com.au$
              1999120801
              7200    ; Refresh (2 hours)
              3600    ; Retry (1 hour)
              604800  ; Expire (7 Days)
              86400 ) ; Minimum TTL


although they load and work ok, i would still rather no errors when they are
loading.   Any ideas?
Any help appreciated.

Thanks
Nathan