Loren describes how to keep the DVD tray from popping out when removing your Toshiba M400 Tablet PC from a backpack.
All you have to do is to tap on the DVD-looking icon in the System Tray and in a pop-up menu that appears, select the “Power Off” option. Once you do this the tray will no longer pop open when you accidentally or otherwise depress the DVD “open” button.
Thanks, Loren, for the tip. He offers so many useful ideas! No wonder so many people, including educators of all ranks, follow his postings.