I would tend to agree with the graphics issue...I have a Dell D830 with Nvidia graphics running both OpenSolaris and Fedora9 in 64-bit mode (dual-boot).
The machine does have the A12 upgrade...so looks like the real difference between us is intel .vs. nvidia graphics? Compiz worked out-of-the-box with OpenSolaris...had to fiddle with Fedora9 but it works also. VirtualBox 1.6 works with OpenSolaris host and Fedora9....without turning on the virtualization option at the hardware level....So probably not a processor issue. This message posted from opensolaris.org
