Hi, I have a 15" Macbook Pro (2.66Ghz Core2Duo). When connecting an external screen, sometimes, the quality is horrible except for most of the 'Native' OSX applications.. ???? Sometimes everything looks fine, sometimes it doesn't. Tested: multiple monitors, VGA cables and displayport-to-VGA dongles - without luck. Attached is an example of the external monitor, with Chrome and the "Desktop & Screensaver" settings.. Any ideas?