I was using isight quite happily in parallels 2.5 3188 but this problem occured to me 2 months ago after certain updates of WINXP had been done. Whenever I activate isight in USB device menu, Win xp just freezes or fails to shut down. And when I try to disable the isight, the parallels freezes, and my imac couldn't be normally switched off too by then. Did anyone experience this kind of problem and any solution about this?