The logic of the WebVideoFullscreenController tickle timer (which keeps the screensaver from activating when watching video in fullscreen) is backwards: it tickles while the movie is paused, and stops when it's playing.
Created attachment 71102 [details] Patch
Committed r70708: <http://trac.webkit.org/changeset/70708>
http://trac.webkit.org/changeset/70708 might have broken Leopard Intel Release (Tests)