OK so you've booted Seven in a VM in Linux...but you're also doing a regular dual-boot with GRUB2 as default bootloader right?...edit: yes you do, you just said "next time you're booting Kubuntu" so you do dual-boot It's just that your first post about it was very confusing
I do not use Grub2 (it's beta and too messed yet).
I have a dual boot system.
But I also use VirtualBox to direct access and boot Linux withing Windows 7.
When I've tried to do the opposite, boot Windows 7 withing Linux, I know new drivers will be loaded.
They installed ok (I lose Aero and the video resolution dropped, but I can live with it).
The problem - BSOD - arose when I boot the Windows 7 again by normal way...
Echoing others, the 10.04 final is pretty stable for me
+1