Today’s maintenance release of Oracle VirtualBox (4.0.10) spreads the GNOME 3 love a little further — following the fixes in 4.0.8 for GNOME 3 guests on Linux hosts, GNOME 3 now finally works glitch-free on OS X hosts in 4.0.10.
Small and fuzzy video evidence (.ogv file)
Guess this means I have fewer excuses than ever before for not knuckling down on the GNOME 3 HIG 
Woohoo, GNOME 3 HIG!