Last night I had a strange problem... I tried to connect the dots to unlock my phone but it kept registering completely random patterns and locked my phone for 30 seconds, but when I tried to hit the okay button it wouldnt register. When I tried to turn my phone off with the button on top i could not click any of the selections: silent mode, airplane mode, or power off. It took 3 battery pulls and it still did not remedy the problem, but just leaving it on my phone was fine 8 hours the next morning. Does anyone have any idea what caused this or how to prevent it in the future?