It is an unusual layout but 1280px probably accounts for at least 95% of web designers who use affiliate networks
I think that the fact that the 'home' page doesn't relay 'real' stats is probably a server load issue, I hanv't seen any further threads on it, but I imagine that it saves quite alot of load on their reporting server, by having a 'fixed' stats counter on the home page that isn't realtime.
Aside from the width, I think it look quite nice. Shame their are no new features to talk about.