Well, if you are like some I know and just cannot live without Internet Explorer, today may be a good time try.
There seems to be a 0-day in the wild for IE. This vulnerability was not addressed in yesterdays Black Tuesday round of updates. With the exploit code in the wild it will be maybe days at most before it becomes more widespread.
Info:
http://isc.sans.org/diary.html?storyid=5458 (http://isc.sans.org/diary.html?storyid=5458)
Seems word pad has a flaw as well. XP SP3, Vista and Server 2008 not vulnerable.
http://www.microsoft.com/technet/security/advisory/960906.mspx (http://www.microsoft.com/technet/security/advisory/960906.mspx)
Gregg