=== modified file 'caffeine/core.py'
--- caffeine/core.py	2011-01-14 20:12:35 +0000
+++ caffeine/core.py	2011-02-10 20:57:39 +0000
@@ -472,7 +472,7 @@
         After detection is complete, it will finish the inhibiting process."""
         logging.info("Attempting to detect screensaver/powersaving type... (" + str(self.dbusDetectionFailures) + " dbus failures so far)")
         bus = dbus.SessionBus()
-        if 'org.gnome.ScreenSaver' in bus.list_names():
+        if 'org.gnome.SessionManager' in bus.list_names():
             self.screensaverAndPowersavingType = "Gnome"
         elif 'org.freedesktop.ScreenSaver' in bus.list_names() and \
              'org.freedesktop.PowerManagement.Inhibit' in bus.list_names():
@@ -527,17 +527,17 @@
 
     def _toggleGnome(self):
         """Toggle the screensaver and powersaving with the interfaces used by Gnome."""
-
         self._toggleDPMS()
         bus = dbus.SessionBus()
-        self.ssProxy = bus.get_object('org.gnome.ScreenSaver',
-                    '/org/gnome/ScreenSaver')
+        self.ssProxy = bus.get_object('org.gnome.SessionManager',
+                    '/org/gnome/SessionManager')
+        self.ssProxy_interface = dbus.Interface(self.ssProxy, "org.gnome.SessionManager")
         if self.sleepIsPrevented:
             if self.screenSaverCookie != None:
-                self.ssProxy.UnInhibit(self.screenSaverCookie)
+                self.ssProxy_interface.Uninhibit(self.screenSaverCookie)
         else:
-            self.screenSaverCookie = self.ssProxy.Inhibit("Caffeine",
-                    "User has requested that Caffeine disable the screen saver")
+            self.screenSaverCookie = self.ssProxy_interface.Inhibit("Caffeine", 0,
+                    "User has requested that Caffeine disable the screen saver", 8)
 
     def _toggleKDE(self):
         """Toggle the screensaver and powersaving with the interfaces used by KDE."""