We are an Australian company and we develop and maintain an Australian Booking Engine for the corporate travel arena and our site is mainly accessed by clients from mid to large organisations. Our users are forced by their company polices to use a certain browser and guess what we have 84% IE6, 13% IE7, 2% Firefox 2 and only 1% Firefox 3 usage. My feeling is that a lot of organisations have spent so much money on web proxies and enterprise firewalls that they really don't care what browser is installed on the client machine. And therefore the out-of-box browser is policy. And ability to use group policy to configure IE is a plus a guess. I believe that most Australian organisations will probably skip Vista and go from XP to Win 7 and therefore our next target browser after IE6 is IE8. That's provided MS does not include a Win 7 to XP downgrade path. Otherwise we be stuck with IE6 for a long long time.