Maybe everyone that has the problem never puts in trouble tickets. I know how it goes as everyone always contacts our IT's instead of putting a trouble ticket.
Funny, on a sad note, I hae a friend, Adub, who owns a lan center that is selling Power Color 5870's for $325 shipped each.
He spent nearly 4k on a bunch of them to upgrade his machines and they have just ended up costing him money as you can imagine, all those machines were unstable and no good, knocking people out of their games.