After some testing, I think it's related to some interaction between gnome-settings-daemon and tiling window managers. I can trigger the bug in awesome, dwm and scrotwm but not in Unity, GNOME and Openbox.
I don't think it's the same problem as bug #868400, their problem is specific to the synaptics device, as someone mentioned that the touchpad stopped working but the pointer nub in the keyboard kept working.
After some testing, I think it's related to some interaction between gnome-settings- daemon and tiling window managers. I can trigger the bug in awesome, dwm and scrotwm but not in Unity, GNOME and Openbox.
I don't think it's the same problem as bug #868400, their problem is specific to the synaptics device, as someone mentioned that the touchpad stopped working but the pointer nub in the keyboard kept working.