The take-down of the FBI servers will occur on Monday, July 9, 2012. In the event your computer was infected with this malware, you will lose your Internet connection when the servers are taken offline.
What to do
If you have not checked your computer yet to find out if it is infected with the DNS Changer trojan, it is important to visit http://www.dcwg.org/detect/. DCWG has a list of links to security organizations that are maintaining detection sites in local languages. Each site has instructions on the next steps to clean up possible infections.
Background information is available from the FBI website at FBI — International Cyber Ring That Infected Millions of Computers Dismantled.