On 9 July 2012 the FBI will turn off DSN servers that it has been running since seizing them from cyber criminals. In order to stop millions of people from immediately losing Internet connectivity, the FBI replaced the infected servers with clean servers and continued to operate them. They did this to give people time to clean their infected computers. If your computer is infected with the malware on 9 July you will not be able to connect to the Internet. The number of affected computers is still between 350,000 and 500.000.
How do you check to see if you are infected?
(1) It may be as simple as performing a search using Google. On 22 May 2012 Google started notifying search users if their computer is infected with DNSChanger malware. Go to Google's Security Blog to read the complete article.
If you are infected, both Google and the DCWG will provide suggested fixes, although a computer professional may be needed.
For more information, here are a few links to provide additional information: