A year ago Ubuntu I did not catch on to the new computer for a very simple reason: the lack of full support for the configuration with two ATI cards, on each of which hangs on the monitor. The maximum that could try to offer Ubuntu at the moment, it's Xinerama, without composite, and without the ability to drag Windows from one monitor to another.
Question: have any improvements been made since then support for this configuration in Ubuntu? Does anyone have a live example of two monitors running on two raznyh ATI under Ubuntu?