Earlier quoted context omitted.
Microsoft provides free Virtual Machine images for testing Internet Explorer. http://www.microsoft.com/en-us/download/details.aspx?id=1157...
Are you free to use those on non-Microsoft host operating system? I thought the last time I checked the host had to be Windows Professional. Also you have to re-download the image every 3 months, and get it set up again. I can't just toss a virtualbox image on my personal Ubuntu machine and test in IE6-8. I need a Windows computer to test my personal sites (which are barely worth development time.)
"may or may not work in other hosting environments."
&
"simply shutdown the VPC image and discard the changes you’ve made from undo disks to reset the image back to its initial state. By doing either of these methods, you can technically have a base image which never expires although you will never be able to permanently save any changes on these images for longer than 90 days."
... so it seems pretty positive, really.
Which, as someone who'd like to see more Free operating systems and less proprietary ones, is a bit of a shame! :P