Comment 3 for bug 1171506

Reverting back to

ii icedtea-7-plugin 1.2-2ubuntu1.3 web browser plugin based on OpenJDK and IcedTea to execute Java applets
ii icedtea-netx 1.2-2ubuntu1.3 NetX - implementation of the Java Network Launching Protocol (JNLP)
ii icedtea-netx-common 1.2-2ubuntu1.3 NetX - implementation of the Java Network Launching Protocol (JNLP)

Fixes the issue for me.