Hackers have released software that exploits a recently disclosed flaw in the Domain Name System (DNS) software used to route messages between computers on the Internet. The attack code was released Wednesday by developers of the Metasploit hacking toolkit.Internet security experts warn that this code may give criminals a way to launch virtually undetectable phishing attacks against Internet users whose service providers have not installed the latest DNS server patches. Attackers could also use the code to silently redirect users to fake software update servers in order to install malicious software on their computers, said Zulfikar Ramizan, a technical director with security vendor Symantec. "What makes this whole thing really scary is that from an end-user perspective they may not notice anything," he said.

Just switch to OpenDNS and you should be ok.
All patches for it can be found here, along with instructions:
http://www.microsoft.com/technet/security/...n/ms08-037.mspx
KB numbers:
kb951746
kb951748
These have been released for Windows 2000, 2003, 2008 and Windows XP. Windows Vista SP1 was not affected as I recall.
Hope this helps!
Many *nix servers are still using stuff from the previous century.
Remember Y2K?
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