Is the systems menu popping up all the time?

This is how to change that:

Go into Advanced Settings/System. The first item allows you to completely disable the System Menu so it cannot be accessed by looking down. The System Menu can now only be accessed with the touchscreen. An alternative is to increase the dwell time required to bring up the System menu. Set this to a time above 1 second and the menu should not pop up unless you want it to.