It's not even 3 browsers. It's IE6 and IE7 or IE8... depending on which one you have installed on your machine. Which you can test anyways.

So really, it's a 250MB trial to test IE6. But not really test IE6. Just render images from IE6. Unacceptably slowly.

Sometimes it boggles my mind that software can be written this badly. I think this is a new low, even for Microsoft.