> On to speculation - I'd guess they don't want you to use full screen, and only included it as a concession to things like movies / games.
On the contrary, the Lion fullscreen mode, which caused the issue, was a relatively large push towards fullscreen, by giving it a standardized and better (if you don't have multiple displays :) UI and integrating it into built-in applications.
On the contrary, the Lion fullscreen mode, which caused the issue, was a relatively large push towards fullscreen, by giving it a standardized and better (if you don't have multiple displays :) UI and integrating it into built-in applications.