Yes it is! It broke my heart when I couldn't get Virtual Box to work. Had to go back to Debian yesterday 'cuz of this.
My work revolves around VirtualBox, and my bosses won't change their mind about this. I've started today, just got home from my first day. I've installed it in a VM in Debian, I'll keep using it virtualized until I get another pc.
You fellas done a great job!