vistabomination

Vistabomination: a kludge of Vista, from Microsoft Windows Vista edition, and abomination according to Merriam-Websters definition of Abominable (disagreeable, disgusting, unpleasant)

"He liked Windows XP, but Vistabomination killed his joy for computing."

"I've installed Vistabomination before, but this install was downright user-hateful".