[nadvorny]

It's not that IE9 is bad. It's that IE is not only IE9. It's IE7,8,9 and 10. Testing on all IE versions takes as much time as testing on all other browsers. They all have their unique issues.

And you can't run all of them on one machine safely.

And you usually use IE7 as the least common denominator, thus sacrificing functionality.

[ethermal]

VMs run all of them crazy easily. And using unity you can have all versions on your desktop at once and open. I do it every day. My default browser is IE 9, so when i launch I always launch in IE 9 do all of my testing debugging there, almost never even look at another browser until it works 100% there. Then my browser for surfing is Opera, all others for testing.

[derekerdmann]

Are you sure you can't run them on one machine safely? Press F12 and press the "Browser Mode" button. That covers everything through IE 7 in about 3 seconds.

[jamietre]

"It's that IE is not only IE9. It's IE7,8,9 and 10"

That's ridiculous. There are about the same number of people using Firefox 3.6 as there are using IE6 and 7. So how come you aren't bitching out Firefox? So don't test on IE 6-8 if you don't care, but does the existence of old browsers mean that you write off every product they've made since then?