We are running Parallels on Linux and have a Vista Business guest installed. Each time we power on that VM, a warning comes up that the CPU has HT capabilities, but Parallels thinks it is disabled in the BIOS. Going into the BIOS, we see no mention of HT / HyperThread. Computer is a Dell Latitude D830 w/ nVidia, 4GB RAM Ubuntu 7.04 Linux, Envy to install the nVidia binary drivers, SMP kernel (uname -a)