I'm running 3 computers and 5 accounts, so I would say no. I'm not using the improved graphics version however,which may be what he's referring to. Personally, I can't see using more than 2 accounts on one comp without having a huge spanning monitor (you cant tweak the resolution like you could in wow as much), and I personally had troubles with freezes running 2 monitors on one computer and playing a client on each.