--- /etc/acpi/powerbtn.sh.orig    2008-09-26 09:36:54.000000000 +0800
+++ /etc/acpi/powerbtn.sh	2009-01-30 18:50:42.000000000 +0800
@@ -6,26 +6,37 @@
 # Skip if we just in the middle of resuming.
 test -f /var/lock/acpisleep && exit 0
 
-# If gnome-power-manager, kpowersave or klaptopdaemon are running, let
-# them handle policy This is effectively the same as 'acpi-support's
+# If gnome-power-manager, kpowersave, or powerdevil are running, let
+# them handle policy. This is effectively the same as 'acpi-support's
 # '/usr/share/acpi-support/policy-funcs' file.
 
 if pidof gnome-power-manager kpowersave > /dev/null ||
-  (pidof dcopserver > /dev/null && test -x /usr/bin/dcop && /usr/bin/dcop kded kded loadedModules | grep -q klaptopdaemon) ; then
+  /usr/bin/qdbus org.kde.kded /modules/powerdevil &> /dev/null ; then
     exit
 fi
 
 # Otherwise, if KDE is found, try to ask it to logout.
-# If KDE is not found, just shutdown now.
-if ps -Af | grep -q '[k]desktop' && pidof dcopserver > /dev/null && test -x /usr/bin/dcop ; then
-    KDESES=`pidof dcopserver | wc -w`
+if pidof plasma > /dev/null && pidof dbus-daemon > /dev/null && test -x /usr/bin/qdbus ; then
+    KDESES=`pidof ksmserver | wc -w`
     if [ $KDESES -eq 1 ] ; then
         # single KDE session -> ask user
-        /usr/bin/dcop --all-sessions --all-users ksmserver ksmserver logout 1 2 0
+        pid=`pidof ksmserver`
+        user=`ps -C ksmserver -o user --no-heading`
+        export `grep -z DBUS_SESSION_BUS_ADDRESS /proc/$pid/environ`
+        su --command '/usr/bin/qdbus org.kde.ksmserver /KSMServer logout 1 2 0' $user
         exit 0
     else
         # more than one KDE session - just send shutdown signal to all of them
-        /usr/bin/dcop --all-sessions --all-users ksmserver ksmserver logout 0 2 0 && exit 0
+        ret=0
+        ps -C ksmserver -o pid,user --no-heading | while read line; do
+            pid=`echo $line | cut -d ' ' -f 1`
+            user=`echo $line | cut -d ' ' -f 2`
+            export `grep -z DBUS_SESSION_BUS_ADDRESS /proc/$pid/environ`
+            su --command '/usr/bin/qdbus org.kde.ksmserver /KSMServer logout 0 2 0' $user
+            ret=$(( $ret + $? ))
+        done
+        # if no error ocurred, terminate script
+        [ $ret -eq 0 ] && exit 0
     fi
 fi