All terminals stop accepting input after a short time

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http://crunchbanglinux.org – Hi all,I'm really having troubles hooking on to something to troubleshoot this one.  Any terminal I use stops working after I leave it alone for a while.  I'm not sure if it only happens when I'm logged in to a server via SSH or not, but I think not.  All the menu's still work, just the terminal will not accept any input from the keyboard or mouse.  I've tried with Terminal, Gnome-Terminal and Konsole.  All the same.  If I open a new tab, it works, but then eventually stops like the others.Tried:checking relevant logs -  couldn't (HowTos)