In order to use certain web site features, you may have Sun Java software installed. (Java is a program that allows you to play games or run programs via your web browser.) Vulnerabilities in Sun Java could allow an attacker to gain control of your computer, install, and run malicious software on your computer, or cause it to crash. If you have Sun Java installed, then you should apply updates from Sun to remedy these vulnerabilities:
http://www.java.com/en/download/manual.jsp