Hi,

This had me running round in circles for a hour (mainly undoing 18mnts of java experimentation). Darn those updates!

I solved it but, as yet too busy to repeat the soln properly to confirm a proper resolution:

In firefox

[Prefs]-->Applications-->JNLP-->

then choose "other" and browse to and select
/usr/lib/jvm/java-6-openjdk/jre/bin/javaws

I THINK this gets me going again with openjdk and pulseaudio integration etc. Now I hope this workaround does the trick for you but, may be not as I have been a little lapse with controlling java on this production box.

Alternatively, it may have been this which got me going:
sudo ln -s /usr/lib/jvm/java-6-openjdk/jre/bin/javaws /usr/bin/


java version "1.6.0_24"
OpenJDK Runtime Environment (IcedTea6 1.11.4) (6b24-1.11.4-1ubuntu0.10.04.1)
OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)