Virtualisation (WinXP mode in Win7) requires on-chip support of Virtual Machines, aka: Hardware Assisted Virtualisation.
Thats a huge cock-up, because most businesses get the cheapest parts they can lay their hands on, including CPU’s … and the cheap chips throw away VM support.
Major programming f@#$up on M$ part
I guess many business’s will postpone, nay cancel, the upgrade to Windows7 … just like they did vista
I guess a proper Binary Translation VM is beyond M$ capabilities?
Admittedly, the hardware assisted virtualisation will be faster … and is likely in the not-too-distant future to be compatible with all chips … but … in a few years, no-one will need WinXP anyway … everyone needs the WinXP VM now … and the vast majority won’t have it