IE9 makes use of two features available in Vista & 7, Direct2D & DirectWrite to speed up the user experience and they are unavailable in XP. There are some minor security features that rely on the newer OS's security models and also make it incompatible with XP.

Get the full down low at Ars Technica - The most modern browser there is: Internet Explorer 9 reviewed.

Internet Explorer 9 makes use of two features available in Windows Vista and Windows 7, Direct2D and DirectWrite to speed up the user experience and they are unavailable in Windows XP. There are some minor security features that rely on the newer OS's security models and also make it incompatible with Windows XP.

Get the full down low at Ars Technica - The most modern browser there is: Internet Explorer 9 reviewed.

IE9 makes use of two features available in Vista & 7, Direct2D & DirectWrite to speed up the user experience and they are unavailable in XP.

  There are some minor security features that rely on the newer OS's security models and also make it incompatible with XP.

Get the full down low at Ars Technica.

IE9 makes use of two features available in Vista & 7, Direct2D & DirectWrite to speed up the user experience and they are unavailable in XP. There are some minor security features that rely on the newer OS's security models and also make it incompatible with XP.

Get the full down low at Ars Technica - The most modern browser there is: Internet Explorer 9 reviewed.