Some of Liveconnect tests(JS > Java)fails to work with Firefox3.6 but works fine under FF3.5 and IE8/IE7. These are mostly the tests related to data type conversion e.g. the one given below where OverLoading is tested by calling "JS2JavaArg" within an applet with args as type "int". There are other methods inside the applets with same name as "JS2JavaArg" but different set of arguments
Test applet:
http://sqeweb.sfbay.sun.com/deployment2/jitu/deployment_mustang_exec_ws/deployment/src/plugin/LiveConnect/LiveConnect/html/auto/OverLoadTest1.html
Java source against this applet can be located under ../../src folder

This could be a bug under FF3.6 too