System screen goes to suspend (screen off) when Totem playing movies after timeout

[Murz]

Binary package hint: totem

When I playing movie in totem and didn't touch a mouse, the system goes to suspend after 20 minutes (suspend timeout in systemsettings) - display goes to powersave mode and I see black screen. If I touch the mouse - the display wakeups, but it is very uncomfortable.
VLC player, Dragon player disables screen suspend when they showing movie.
But in Totem I can't find any options about this.
How I can disable suspend in Totem?

ProblemType: Bug
Architecture: amd64
Date: Fri Nov 27 08:31:58 2009
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: fglrx
Package: totem 2.28.2-0ubuntu3
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-15.50-generic
SourcePackage: totem
Uname: Linux 2.6.31-15-generic x86_64
XsessionErrors:
 (polkit-gnome-authentication-agent-1:2968): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (npviewer.bin:3245): Gtk-WARNING **: /usr/lib/gtk-2.0/2.10.0/engines/libqtcurve.so: wrong ELF class: ELFCLASS64
 (npviewer.bin:28589): Gtk-WARNING **: /usr/lib/gtk-2.0/2.10.0/engines/libqtcurve.so: wrong ELF class: ELFCLASS64

[Charlie Kravetz (cjkgeek)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 487859, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.