Watching a youtube video, I click on "maximize to full screen" (the flash button). It maximizes to the wrong screen. How can I choose which screen will display the video?
It might depend on your window manager, but in KDE Flash maximizes to the display the browser is in. It may not work as expected if your browser window spans across two displays. What I do is move the browser window to say the left screen, then hit maximize, it will be maximized on that left screen.
I don't know of any way to leave the browser on the right display and have it maximize on the left.