Seems a bit pre-emptive, as the suggestion is based on <i>"a critical yet unknown vulnerability"</i> that was <i>"probably exploited"</i> in the recent attack on Google &#38; others.<p>That said, the very fact that a browser is not super-sandboxed in the first place is frightening, and IE has a huge amount of integration compared to other browsers.  Mayhaps that's why it's been such a problem?