As per following documents,
http://java.sun.com/j2se/1.5.0/docs/relnotes/version-5.0.html
http://java.sun.com/javase/6/webnotes/version-6.html

"Java SE Downloads", "This distribution of Java SE Development Kit (JDK)", or "Java Runtime Environment (JRE) 5.0 Update 9" in 5.0 download page ( http://java.sun.com/javase/downloads/index.jsp ) seems not formal.

Also the "Java Runtime Environment (JRE) 6 Release Candidate" in javase 6 download page should be "Java SE Runtime Environment (JRE) 6 Release Candidate"?

I'm not so sure about all above. Please review the naming once again.