How To Uninstall Windows Presentation Foundation Plugin In Firefox

The Security patch released: Microsoft Security Bulletin MS09-054 – Critical: Cumulative Security Update for Internet Explorer (974455)
Will stop the exploit of this Firefox vulnerability
But from reading more about this issue, and I note that I had to go to Google to find clearer information to do this)
It would seem that no one wants this installed in Firefox in the first place !
And not only that, but it was an automatic install by Microsoft in February this year (imagine that)

Here’s the uninstall procedure for Firefox users:
Note: Windows 7 users just need to uninstall the Firefox pluggin normally

Close all Firefox browsers
Start > Run > c:\Windows\Microsoft.NET\Framework\v3.5\Windows Presentation Foundation
Right click on NPWPF.dll, and rename it to NPWPF.OLD
Restart your computer

Start > Run > Regedit
Expand: HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins
Right click on: @microsoft.com/WPF,version=3.5
Select “Export”
Give it a name like “BadPluggin” in the Save Box, then select Save button
Right click on: @microsoft.com/WPF,version=3.5 again
Select “Delete”
Restart your computer