java applets on Mountain Lion (Mac OS 10.8)
I somehow messed up my Java installations with JDK7 and JDK8 under Mac OS 10.7 Lion. (FWIW: I could even make the JRE7's preference pane find JDK8 and the JRE in it, but applets did not start either way.)
I chose to make the jump and try setting things up under Mountain Lion (developer preview 3 update 2). I know there were bug reports about Java applets in Safari. But are those solved now? 10.8 is supposed to be shipping in weeks, if not days, no?
In any case, now I have Java 6, 7, and 8 on this machine, with JRE7's preference pane seeing all three. I still cannot start up applets, which I really need. (I know, I know, I could revert to a backup