When I installed Mountain Lion on my 2011 11'' MacBook Air today, I knew something was just not right. The icons in Launchpad seemed slightly out of focus. In comparison, Lion had larger, but more importantly, crisper icons. Similar remarks have been made by others in the OS X forum: http://forums.macrumors.com/showthread.php?t=1395258 http://forums.macrumors.com/showthread.php?t=1411872 But I would like to get some feedback from 11'' MBA users, especially regarding the following interesting observation: On an external 1920x1080 display, the icons are bigger and sharper. So perhaps the blurriness is due to resolution. Indeed, scaling the MBA display from 1366x768 to 1024x768 makes the icons crisp. The screengrabs below illustrate this. Look carefully, the difference is slight, but it is there. (1366x768)......................................(1024x768) Can anybody confirm this on their MBA?