Windows Crappy Software: Free malicioius software removal tool

[Computerworld - One in every 20 Windows PCs whose users turned to Microsoft for cleanup help were infected with malware, Microsoft said this week.

Microsoft cited that statistic and others from data generated by its new Safety Scanner, a free malware scanning and scrubbing tool that re-launched May 12.

The 420,000 copies of the tool that were downloaded in the first week of its availability cleaned malware or signs of exploitation from more than 20,000 Windows PCs, Microsoft's Malware Protection Center (MMPC) reported Wednesday. That represented an infection rate of 4.8%.]
http://www.computerworld.com/s/article/9217113/New_malware_scanner_finds_5_of_Windows_PCs_infected?source=CTWNLE_nlt_pm_2011-05-27

Microsoft Malware Protection Center: http://www.microsoft.com/security/portal/Default.aspx