Windows Update comes with a sort of surprise this time for us firefox users. Microsoft .Net Framework 3.5 SP1 installs an extension named “Microsoft .Net Framework Assistant 1.0“. The add-on adds support for “Clickonce” and the ability to report installed .Net versions to the web server. Well, I suppose you neither like Microsofts way to distribute the add-on (no uninstall routine, the uninstall button is deactivated) nor the way Firefox handles access to your browser. So let’s get rid of it.