For those of us that have "normal" brains, as opposed to "IT"* brains, the fact that our man in Bracknell, our man of Apple, and sundry others all agree that XP will be a problem means that I, for one, will be off next year looking for a decent cheapo pc with something other than XP on it.
*
I never got beyond Heat, Light and Sound in the 4th year, and avoided science O levels. (The skool got its own back by making me take 3 maths O levels). And I'm still on p15 of Hawkins' book.