Exploitable bugs fixed in update 30 -
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6761678
 
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6670868
 
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7041800
 
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6682380
 
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7103725