Whenever Action (1.4.0) runs, and i start a youtube video, the flash plugin crashes. I use Firefox 13.0.1, Windows 7 X64 Professional. I also noticed that sometimes the Action_x64.bin consumes 25% CPU power (One core) without any recording, or use of the software.
Edit: I forgot to mention that this problem occurs since the recent flash update. Until that, everything was fine.