<A HREF="http://news.zdnet.com/2100-1009_22-5960413.html?tag=zdnn.alert">A critical vulnerability,</A> found in some versions of Apple Computer's popular iTunes, could enable attackers to remotely take over a user's computer, according to a warning issued Thursday. The discovery of this flaw comes days after Apple issued its security update for iTunes 6 for Windows. This flaw existed on the earlier version of iTunes 6 for Windows and was not addressed by the newest security update, according to a warning issued by eEye Digital Security.