Somehow my logout/poweroff button has gone missing from the desktop, how do I restore it?
Also I used to be able to select the WM to use before logging in (e.g. Unity, Gnome etc), but I don't get that option anymore, how do I restore that?
My update log is at http://pastebin.com/wCWBW7iu
/var/log/apt/history.log
.