Just before I go and call the XTRA Help Desk I thought I might check weather or not anyone else is noticing a similar problem...

For example if we update a record in our name server, ns1.clear.net.nz gets it pretty quickly similar situation to 203.109.252.42 (Ihug). The problem appears to be anyone logged into XTRA or using their DNS, is there something different about the way their DNS servers operate? They just dont seem to get updated records for days sometimes.