While trying to install the Virtual Machine Additions in Windows 7 beta running in Virtual PC 2007, I found out that Virtual PC 2007 has two service pack 1 - the older one upgrades it to 6.0.156, the newer one to 6.0.192. If you try to install the VMA that came with the older SP1, at reboot you will be greated by a BSOD telling:
A problem has been detected and Windows has been shutdown to prevent damage to your computer.
Fs_Rec.sys
The driver mistakenly marked a part of it's image pagable instead of nonpagable
"It's" instead of "its" is not a mistake of mine, pure Microsoft's :)
Using updated drivers it works, but I wonder why MS released two SP1s and why Windows Update didn't tell me I had the older SP1 and should download and install the newer one.
And still have to find what "pagable" means. In Italian that sounds pretty funny because "pagare" means to "pay"...