[wolfgke]

1. The latest IE version to run under Windows 2000 is IE6 2. The latest IE version to run under Windows XP is IE8 Both versions are still widely used (especially Windows XP) - especially in the setting of big corporations 3. There are business applications that either depend on IE6's rendering model 4. There are admins (especially in the corporate field) that fear updates because they could break essential applications

[jay_kyburz]

You could have an ie6 mode that you could make difficult to re-enable for those sysadmins. I don't know what to say about ie9 requiring vista, it's so obvious that ie8 will be the ie6 of 2013 when we are all trying to rely on HTML 5 features. That's just a bad decision.