I don’t know why Sun has such as slow pace of Java releases. You go to one page, and they say Java 6 Update 5 is the latest. But, do a bit more digging, and I found Update 6.
So, go to this page, and scroll down to the Java Runtime Environment (JRE) download (there are quite a few others), and grab the latest update.
Congratulations, you’re now up-to-date before the rest.