I'm working with flash application. It works in other browsers except for Firefox. In Firefox, after couple of minutes, the application hangs and Flash player eats up 50% of CPU. Firefox becomes unresponsive and stays like that. Neither Firefox nor Flash player crashes. Flash just hangs forever. I had to go to task manager to kill Flash player process. This doesn't happen when I install a Debug version of Flash player or one of the older versions of Flash players. Is there a known issue with Flash player? I'm using: Flash Player 11.5.502.146 Firefox 18.0.1 Windows 7 32 bit.