DPMS still seems to kick in, even though we're inhibited. gnome-screensaver-2.22.1-1.fc9.i386 gnome-power-manager-2.22.1-1.fc9.i386 Full log of gnome-screensaver attached whilst inhibiting playback using Totem.
Created attachment 303840 [details] screensaver-bug.txt
From the log it looks like the screensaver is doing the right thing. We aren't locking/blanking the screen and we aren't sending the power idle signal. This must be gnome-power-manager ignoring our inhibit.
Changing version to '9' as part of upcoming Fedora 9 GA. More information and reason for this action is here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
Seems to be working fine with the latest updates...