icedtea-web 1.5 needs confirmation to run trusted applet

I've got ubuntu 14.04 64 bit. I'm using firefox 29 and icedtea as java.

"About:plugin" in firefox: IcedTea-Web Plugin (using IcedTea-Web 1.5 (1.5-1ubuntu1))

Now I've setup firefox to ask to activate before launching java from trusted sites.

Whenever I launch any service that uses java I get the "java web start" applet that asks if I'm sure if I want to run this application.

I can say yes or no, and tick a box to remember the answer.

This is the problem at hand; icedtea-web can't remember the answer if I check the "yes" button.

Java works fine when it is started.

I have tried to purge all java and reinstalled openjdk-7, java web start and icedtea web-controlpanel.

I've tried to play around with the control panel for java web start but with no success.