Docky no longer shutdowns, resets, or suspends the PC

Hello,

Im running Mint KDE 16 64bits. All is awesome except that now docky's Session Manager won't turn the PC off, or reset or anything. When pressing the button the pop up comes up as in the screen shot, but after clicking on Shut Down, the window and Docky close but nothing else happens.

This used to work just fine in Mint 15 KDE 64b.

Happens on a new install in a virtual machine as well.

is this a new bug?

Thanks,

(I've pretty much copied my post from here
http://forums.linuxmint.com/viewtopic.php?f=47&t=160388 )