I noticed it takes a while to exit from the warning screen-maybe it still has to 'boot up'. Then if I click too many times, it 'marks a point' wherever I was when I did the extra click. I really wish the enter button wasn't in the joystick - its hard to tell if I really pushed down, or just nudged it to the side. The beep is something you can turn off - I think the click is a mechanical sound, but I also noticed that it can 'click' but not take.
And what posessed them to label a button 'POS'????
My husband cracked up when he saw that...