Had removed Gnome-screensaver and uses xscreensaver, but Caffeine doesn't seems to work when watching movie using SMPlayer even added both SMPlayer and MPlayer into the activation list.
Anyone got any ideas?
It's a bug (an especially annoying one since 11.10 uses GNOME 3 which has no screensavers). Thankfully someone's working on fixing it: https://bugs.launchpad.net/caffeine/+bug/878690
Marcar Iniciar Caffeine al inciar seción
Matar definitivamente el demonio de gnome-secreensave, dejamos sin permiso de ejecución
Y reiniciamos la PC
Translation (via Google translate):
Take Caffeine out of startup (translation unclear here)
I would definitely kill the daemon
Then reboot the PC.