CERT now says it, too:
Beware of IE (Ryan Naraine story in Internet News).
The U.S. government's Computer Emergency Readiness Team
warning Web surfers to stop using Microsoft's Internet Explorer (IE)
On the heels of last week's sophisticated malware attack that targeted
a known IE flaw, US-CERT updated an earlier advisory to recommend the
use of alternative browsers because of “significant vulnerabilities”
in technologies embedded in IE.
There are a number of significant vulnerabilities in technologies
relating to the IE domain/zone security model, the DHTML object model,
MIME-type determination, and ActiveX. It is possible to reduce
exposure to these vulnerabilities by using a different Web browser,
especially when browsing untrusted sites, US-CERT noted in a
yep, use a real browser.