This what I have...... so are YOU saying that I should delete all of them except for # 11?

J2SE Runtime environment 5.0 Update 11 120.00 MB
J2SE Runtime environment 5.0 Update 10 120.00 MB
J2SE Runtime environment 5.0 Update 09 119.00 MB
J2SE Runtime environment 5.0 Update 06 119.00 MB

J2SE Runtime environment 5.0 Update SE v1.4.2 (61.9 MB)