Hi RBRI
Instead of rebooting when the screen comes up black/with flicker/compressed size simply turn off the monitor and then turn back on - works every time here.
I've been using dualcore/quadcore cpus with SNAP since 2004, or thereabouts, and have rarely had a Desktop freeze problem - guess I could just be lucky so far :-)
However, it is definitely good news that SNAP will be getting updated as it will get more difficult over time to purchase good condition ATI X series cards supported by the current SNAP - and, of course, bug fixes are always welcome :-)
Regards
Pete