You could try dragging the shutdown item int he menu to the bar. If that doesn't work, create a script like this
Code:
#!/bin/sh
shutdown -h
I don't know if that works, just kind of logical to me. Anyway save it to desktop as shut-down.sh and make it executable by either right clicking, going to permissions and clicking the execute button or goto command line and do this
Code:
chmod u+x ~/shut-down.sh