mdm: When loggin in an existing session, doesn't unlock kde screensaver, xscreensaver or gnome-screensaver (works fine with cinnamon-screensaver and mate-screensaver)
mdm: dep on numlockx... when numlockx gets installed it activates numlock. Cinnamon remembers that state. On laptop this results in the inability to login or to use some keys on the keyboard. not all laptops have an obvious num lock indicator/switch. Consider removing that feature or enabling it as an opt-in. Right now, although the feature is disabled by default, it does bring numlockx as a dependency.
mdm: Allow logins without a password? http://forums.linuxmint.com/viewtopic.php?f=90&t=127829 --- check lightdm's postinst, it creates the nopasswdlogin user group
