VMware Fusion 3.0 was released on October 27, 2009 and Parallel Desktop 6 was on September 14, 2010. One year earlier than DP6. Please don't present partial facts to fit your own argument. While I understand why DP6 won't run on Mountain Lion (maybe due to the 64bit extension requirement in Mountain Lion; so it is like"I will code the 64bit extension when I really have to" rather than "let's get more money from our customers."), I am still not happy about it. I bought DP1, 2, 3, 4, 6 because they are generally faster than VM (for my work). So now I have to decide to buy a good product from a bad company or buy a ok product from a good company. Still thinking.