Vista's image-based install is great for hackers
 

USERS HOPING for pirated copies of Vole's latest operating system Vista might find themselves downloading some heavy duty malware.

In an interview with APC Magazine, a Volish technology specialist John Pritchard said that the installation process and the ease with which administrators can pre-install software into a Vista install DVD could be to blame.

http://www.theinquirer.net/default.aspx?article=36134

I like the last line of that article.. "pirates could easily have installed malware into the install files of Windows XP, but they didn't" :p