Comment 3 for bug 560700

Thank you for reporting this to Ubuntu. As kolya found, this issue is most likely related to the update in Firefox that now runs certain plugin processes outside of the browser in order to prevent plugins from crashing the entire browser. Can you please go into "about:config" and toggle "dom.ipc.plugins.enabled.libflashplayer.so" to "false" and see if that resolves the issue? If it does, then this is a duplicate of bug 513887.