no problem for nvidia cards. add a tweak that makes Gnome 3, usable as gnome2:
gnome-shell-windowslist: https://github.com/ahdiaz/gnome-shell-windowslist/ or this: http://gnome-look.org/content/show.php/Window+List+Extension?content=143631 It would be interesting if it were included in the Sabayon default skel.
