[time-nuts] Sync Changing constantly

[Chris H]

This is from my syslog...

Nov 16 20:52:46 chris-laptop ntpd[14189]: synchronized to
GPS_PALISADE(0), stratum 0

Nov 16 20:58:52 chris-laptop ntpd[14189]: synchronized to
202.46.181.123, stratum 1

Nov 16 21:01:01 chris-laptop ntpd[14189]: synchronized to
GPS_PALISADE(0), stratum 0

Nov 16 21:57:31 chris-laptop ntpd[14189]: synchronized to
202.46.181.123, stratum 1

Nov 16 22:00:35 chris-laptop ntpd[14189]: synchronized to
GPS_PALISADE(0), stratum 0

Nov 16 22:02:04 chris-laptop ntpd[14189]: synchronized to 
202.46.181.123, stratum 1

Nov 16 22:04:51 chris-laptop ntpd[14189]: synchronized to
GPS_PALISADE(0), stratum 0

Just wondering why it would be doing this?
Have I missed something in my config?

This is my ntp.conf

root at chris-laptop:~# cat /etc/ntp.conf
statistics loopstats peerstats clockstats
filegen loopstats file loopstats type day enable
filegen peerstats file peerstats type day enable
filegen clockstats file clockstats type day enable
enable pps

driftfile /var/lib/ntp/ntp.drift

restrict -4 default kod notrap nomodify
restrict -6 default kod notrap nomodify

restrict 127.0.0.1
restrict ::1

#Stratum 1 Time Servers - New Zealand
server time1.***.nz
server time2.***.nz
server ntp1.***.***.nz
server ntp2.***.***.nz
server ntp3.***.***.nz


#Stratum 1 Time Servers - World Wide
server ***.***.***

#Local Reference Clock
server 127.127.29.0