Got Bluescreen? Check for Rootkits

Microsoft confirmed today that the recent spate of Windows XP crashes and blue-screens experienced by people who installed this month’s batch of security updates were found mainly on systems that were already infected with a rootkit, a tool designed to hide malware infestations on host computers.

http://www.krebsonsecurity.com/2010/02/microsoft-got-bluescreen-check-for-rootkits/