Hiya
Mine isn't too old, a year or so
Had my previous PC for almost 4 years before buying my current one. The old one still runs some recent games though lol
Apparently Vista has problems because Microsoft won't release the SDK to developers, so almost everyone creating software for the Vista platform is having compatibilty issues
I bought XP when it was first released and it wasn't really stable until Service Pack 1 was released, still had some issues until SP 2 though
I don't intend to invest in Vista until the current issues are resolved, and then I may leave it for a little longer....just to make sure
Regards.
DJM.