1.0 link Rainbow Dash Network http://rainbowdash.net/ Bit Shift (bitshift) http://rainbowdash.net/bitshift http://rainbowdash.net/notice/1899220 @<span class="vcard"><a href="http://rainbowdash.net/user/6850" class="url" title="Minti"><span class="fn nickname">minti</span></a></span> Just based on the name, I'm guessing MDM is MATE's replacement for GDM (that provides the login screen, at least on GNOME systems). So... you should be safe to remove mdm, as long as you don't reboot before installing GNOME fully. I think. :S