Applies to Windows XP and Windows 2000 only. Just for interest, since it probably won't apply to many/any Loungers?

Microsoft released a removal tool for the MSBlast worm on Monday after Internet service providers complained that home users' PCs infected with the malicious program are still causing network congestion.

The MSBlast worm, also commonly called the Blaster worm, started spreading last August and is believed to have spread to hundreds of thousands of systems. While most corporations have cleaned up the worm, Microsoft has found that a large number of home users are still unknowingly infected, the software giant said in a statement.

Read more about it here, and download the fix from here