F19 alpha and VirtualBox

[Michael Cronenworth]

Is there a trick to getting F19 and VirtualBox to play nice?

Host:
Fedora 18 x86_64
VBox 4.2.12
3ghz quad core

When I load the latest F19 Alpha LiveCD ISO it takes about 5 minutes 
just to get to the desktop. Once there, the CD access never stops, and a 
CPU core is always 100%. My clicks take about 30 seconds to register. I 
got ALT-F2 to pop-up to enter a command, but typing in "gnome-terminal" 
and waiting 5 minutes didn't result in anything.