Just had my first BSOD with vista – happened while using iTunes..!
I’m starting to wonder why I upgraded – its slow, clunky and unreliable – rah! Although it does look cool… 
EDIT: happened twice now – starting to think it has something to do with using iTunes to browse the iTunes store.
2ND EDIT: Seems to have stopped happening after the latest iTunes update, but it still doesn’t work problem free, it occasionally freezes up for short periods.. ?