There was an article on techrepublic today titled "10 things you'll love about Ubuntu 10.4"
And what about those 10 things we do not love in Ubuntu 10.4 ?
Well ... make it just 1 - moving the window controls to the left I think it is a damn wrong move since It creates a lot of confusion especially to new users converting from Windows and quite a lot of ambiguity since some windows still have window controls on the right i.e. Chrome browser.
Of course you can move the controls back to the right using the configuration editor but this is not a solution for newbies.
I believe Canonical's first priority should be targeting Windows users coz there are much more of them and more easy to convert compared to Mac users.