The plaintiffs in the suit are maintaining that computers labelled as 'Vista Capable' were in fact barely capable of running even the most basic form of the much-maligned operating system.
http://www.theinquirer.net/gb/inquirer/news/2008/10/06/ballmer-ducks-vista-capable
http://www.theinquirer.net/gb/inquirer/news/2008/10/06/ballmer-ducks-vista-capable