We recently had a server go down which was running our DNS etc. This has all been moved onto a new server, but some workstations are still reverting back to the old DNS server. Some workstations log on with out any problem and have the correct (new DNS server IP address) others take for ever to log on and when then do they have the old DNS IP. Some will be working fine and then for no reason certain netowkr programs will stop working, after looking at the DNS settings i notice that the IP has reverted back to the old one. If I repair the connection it picks up the correct DNS settings...
I have tried flushing the DNS on these machines, but it still happens. I have also re-installed the network cards but still it continues.
Does anyone have any ideas as to which could be causing this and what would be a way to fix it?
My domain controller is running Server 2008