With the 64 bit version of Ubuntu Jaunty I have experienced a substantial prosessor leak causing system crash. When I was just hosting this website in a Debian virtualmachine the system was able to ensure the leak and I used the plugin effectively. Then I added a MythTV system using firewire to record HD, and the system could not handle the leak. I would have constant repeating system crashes after opening Firefox and the plugin loaded. The system would hardlock and I would have to force restart. Very annoying tracking down what was causing the unnecessary processor load, but once the plugin was remove the systems processor load returned to normal load on idle ~1%.