Comment 10 for bug 75157

At least on the guest. On the host, Parallels Workstation 2.0 at first did not support PAE on the host at all, both on Windows and on Linux (in which you get a error during compile of the kernel modules if you try to do so against a PAE-enabled kernel). Parallels Workstation 2.1 did support PAE, but only if the physical address space is limited to 32-bit, and each OS have a different way of during this. NX can still be used, however.