DNS A record changes suddenly

One of our xserves (actually the head of our OD setup) is not playing nice with DNS, which is currently running on a Windows 2003 box. After adding an A record to DNS and creating the corresponding pointer record, the xserve (or dns I’m not really sure which) will then promote itself to a subdomain within the current DNS domain. For example if the name of the DNS Domain in the forward lookup zone is SCHOOL.K12.NY.US and the name of the server is APPLE. An A record can be added for APPLE.SCHOOL.K12.NY.US and the appropriate pointer record gets created. However after about a second or two the recently added A record changes to a subdomain in SCHOOL.K12.NY.US So it would now be possible to add A records to APPLE.SCHOOL.K12.NY.US Now clearly this is not something we want to happen and is proving to be annoying when using such things as workgroup manager. Forward and reverse lookups are however still working and everyone is able to log in and get their home directories. This only started happening within the past week or so and only on this one machine. It was working fine before that and is currently working fine on other machines with similar setups (the obvious exception being that these other machines are OD replicas and not masters). As of today (5/6/08) the machine has all of the latest updates, though the problem started occurring before the updates were done. The xserve is pointed at the correct DNS server and its hostname is set to Automatic in the hostconfig file. The only thing I found strange in the logs was this entry [i]target=enable-network: disabled[/i] and some times this one ERROR: Only name server claiming responsibility for [i]Server Name.. [/i]But the machine in question can still get on the internet and do everything else. Changeip -checkhostname also returns no errors. This has never happened before on any of our previous OD Masters. Something to note too - it seems like it only happens with the particular name of this server. If we try to add another A record with the same IP and different name it seems to work fine. So we thought that this name might have once belonged to another computer (though no one ever remembers naming anything even remotely close to this) and its somehow cached in DNS (which is Active Directory Integrated) or WINS. However a thorough search of DNS and WINS found nothing. Scavaging for old records and clearing the cache also didn't help. I've googled my brains out and found no answers - Apple Enterprise support also said they had never heard of this before. Any thoughts on what might be wrong that won't involve a huge fight with the Windows admin or renaming our OD setup? tom