Actually, that VT extension confirmation might or might NOT be true. The only 2 sources of information is either within the Apple OS itself, and Intel's own utility. Intel is known for making mistakes in their own CPU feature listings, and I have no idea where CPU-x is querying the hardware support from. It could be from the EFI BIOS, a register test, or maybe reading from something inside OSX. If you look carefully, CPU-Z also did not mention VT support in Windows 7. Of course, Intel also ship "specialized" hardware for Apple (that might or might not have the feature enabled for their needs).
Can someone boot a Ubuntu LiveCD on a 2GHz MacMini or MacBook and see if /proc/cpuinfo list vmx as a feature?
I hear what you're saying, but Parallels detects VT-x and that's good enough for me. It IS weird that on Intel's spec sheets there's no mention of VT-x, but as you say it may be that Apple made a good decision for once and had it enabled. I know with other manufacturers they can choose to omit support for VT-x in the BIOS even if the CPU supports it, so this seems to be the other way around.