Not read the full thread (as its massive) but this looks similar to what we have come across in the past to do with the Windows DNS Client, so in Windows (XP anyway) go into the Control Panel | Administrative Tools | Services and locate the DNS Click. CLick on it once and select the Stop Service. Right click on it and disable it from starting up and then reboot the machine and see if that solves it.
Just an idea 
							
						
					Just an idea
 
							
						
 
							
						
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