source: http://www.securityfocus.com/bid/23747/info Firefox is prone to a remote denial-of-service vulnerability. An attacker may exploit this issue by enticing victims into opening a maliciously crafted HTML document. Successful exploits can allow attackers to crash the affected browser, resulting in denial-of-service conditions. Firefox 2.0.0.3 is prone to this issue; other versions may also be affected. boom