When I run Amuse 2.0.1. on stock settings with my 6800XT I mostly get black images (no matter the quality chosen).
My PC can also reboot.
The only way for me to make it work is to undervolt and underclock the 6800XT.
I only have issues with Amuse 2.0.1 and I do not have problems with other sotfware including Furmark test.