The following testcase for 6745485 is failing on 6u10-b33:

http://j2se.east.sun.com/deployment/www/tests/1.6.0_10/6745485/

I tested this on Vista64 FF 3.0.1, using b32 and b33. There are 2 issues that I noticed:

1) On both b32 and b33, you get the following exception in the java console:

---------------------------------------------
java.lang.Exception: comp is null
   at sun.plugin2.applet.Plugin2Manager.runOnEDT(Unknown Source)
   at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
   at java.lang.Thread.run(Unknown Source)
---------------------------------------------

2) On b33 only if you type "javascript:alert(window.java);" in the address bar, the dialog will not come up. In b32, it does.