reports “ . Fully-patched systems running Windows XP and Windows Server 2003 can be successfully attacked by malicious hackers, various security firms warned Tuesday and Wednesday. By Juan_Carlos_Perez@idg.com (Juan Carlos Perez).”
Short form: IE seems to be subject to exploitation when navigating to a hostile site and received a Windows MetaFile (wmf). Site Admins should filter .wmf (and possibly .emf) files at the periphery. Limit IE use to a minimum, as always. FireFox users will receive a “what do I do with this file?” dialog. Doesn’t seem to affect Linux or Macintosh users.