I installed the blackdown 64 bit j2re package as described here:
http://fedoraforum.org/forum/showthread.php?p=138909#post138909
The AMD64 Sun versions do not seem to have plugins yet.
However, when I go to the the menus along the top of this site http://www.princeton.edu/~rvdb/ e.g. "JAVA Applets" Firefox crashes.
I have the depreciated xorg libs installed as mentioned in the 1st link above.
Can other AMD64 users access this site with a x86_64 type java plugin installed without crashing FF?
-gene