I use KVM to run virtual machines on Ubuntu Jaunty and virt-manager to configure them. My machine is dual-boot, and I don't want to have to reboot for my occasional uses of Windows. So I set up a VM ...
My laptop is setup as dual boot between Windows 7 (64-bit) and Ubuntu Linux (64-bit). Because I spend most of my work time in Linux I need a Windows 7 VM to be able to use Microsoft Office tools, etc. ...