The open-source Mozilla foundation released <A HREF="http://www.eweek.com/article2/0,1895,2054122,00.asp?kc=EWNAVEMNL110906EOAD">a batch of highly critical updates</A> for the Firefox, Thunderbird, and SeaMonkey brands and warned that unpatched users face the risk of PC takeover attacks. The Firefox update applies to Firefox 1.5x and does not affect the newer Firefox 2.0 version. Mozilla says Firefox 1.5.0.x will be maintained with security and stability updates until April 24, 2007. After that, support will only be extended to Firefox 2 users.