I have setup ccleaner to run automatically every few hours.
However when ccleaner runs, it automatically minimizes youtube, video, windows media player, etc which I was watching in fullscreen mode to normal mode.
Is there a way to have ccleaner run, yet not disturb the fullscreen videos?
If your browser is running while CCleaner automatically runs you should disable the browser cleaning. As for it minimizing full screen programs possibly it's a bug if it's stealing focus.