By the time a software project gets to Version 2.6, a user might reasonably expect that he wouldn’t have to adapt to yet another paradigm shift in basic user-interface design. Yet this is precisely what users will have to relearn with this latest version of GNOME.
http://www.computerworld.com/softwaretopics/os/linux/story/0,10801,92934,00.html?nas=OS-92934