You may have noticed “IE9 is showing blurred text in some core fonts then text displayed in IE8.” I observed while I was on Facebook and found that IE9 is not rendering few core fonts as sharp as in IE8 and impacted fonts are Arial, Verdana and Tahoma.

“This issue occurs because of a design change to rendering is made in Internet Explorer 9. By default, Internet Explorer 9 uses sub-pixel positioned ClearType to render text by using DirectWrite, whereas Internet Explorer 8 uses whole-pixel positioned ClearType to render text by using the Microsoft Windows graphics device interface (GDI).” explained Microsoft.

Microsoft has released an update to fix the issue and users can download patches according to their operating system, here are the download links:

All supported x86-based versions of Windows 7 including Windows 7 SP1

All supported x64-based versions of Windows 7 including Windows 7 SP1

All supported x86-based versions of Windows Vista

All supported x64-based versions of Windows Vista

All supported x86-based versions of Windows Server 2008

All supported x64-based versions of Windows Server 2008

All supported IA-64-based versions of Windows Server 2008

All supported x64-based versions of Windows Server 2008 R2

All supported IA-64-based versions of Windows Server 2008 R2