Logs off when Shut Down is pressed
We have recently upgraded the school to use Windows 7 Enterprise. On some computers around the school when the "shut down" button is pressed either in the start-menu or on the CTRL+ALT+Delete menu, Windows logs off.
This is happening on random machines, desktops and laptops.
We can't find anything in Group Policy that could be doing this / or in control panel on the computer. Also there is no additional software installed that could be changing this.
Can anyone tell me why this is happening or a way to fix it?