The current XFCE4-Session in Lucid (4.6.1) is using HAL to perform reboots and halts when selected from the menus. HAL is going away from being a supported app for shutdown or reboot in Ubuntu during the Lucid development cycle.
XFCE4-session should migrate to using the GDM interface (when running under GDM) to perform these shutdown and reboots.
Binary package hint: xfce4-session
The current XFCE4-Session in Lucid (4.6.1) is using HAL to perform reboots and halts when selected from the menus. HAL is going away from being a supported app for shutdown or reboot in Ubuntu during the Lucid development cycle.
XFCE4-session should migrate to using the GDM interface (when running under GDM) to perform these shutdown and reboots.