Microsoft Sneak In Firefox Extention In Windows Update

So I just patched my Windows. I restart Firefox. Guess what? Firefox reports that a new extension called "Microsoft .NET Framework Assistant 1.0 add-on" has been installed. Puzzled by this, I try to remove it. It won't let me. And on top of this, Microsoft also tempered with your Firefox agent string, adding ".NET (CLR 3.5.30729)" at the end. Turns out, to remove it, you have to do the following Use regedit to edit HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Firefox\extensions and delete the key. Then in Firefox, put about:config for url. so you can remove general.useragent.extra.microsoftdotnet and microsoft.CLR.clickonce.autolaunch. And remove the Microsoft file at \WINDOWS\Microsoft.NET\Framework\v3.5\Windows Presentation Foundation\DotNetAssistantExtension I guess the new mantra at Microsoft is, Windows 7 isn't done until Firefox won't run. More info here.