Some of the Eee Box PCs have been shipped with viruses on board and ready to go. The virus was sitting on the D: drive, labeled as recycled.exe. As soon as that drive is opened, the virus is unleashed on the other drives and removable media attached. Strangely, Microsoft has come to the rescue as their Malicious Software Removal Tool detects it and removes it. This was only on some models, and apparently mostly in Japan.
Before you denounce ASUS for this oversight keep in mind that they make things that we really want, such as the touch screen Eee PC promised in 2009.