Shut Off and Stay !

[iflog]

My Diamond has a mind of its own. I press the "hangup" key and hold it for a few seconds to "LOCK" the phone. I then press the power key once to close the phone. Now the only way to get the phone back to a useable state is to press the power key gently, press where it says unlock which takes you to another screen where it says "To unlock this device, tap "Unlock", and press that. I can lock the phone, put it to sleep, set it down on a table and look 20 seconds later and it is on and unlocked, without touching a thing! How can it go through the 3 phases of unlocking without even touching it? Next thing I know it will be dialing numbers just by looking at it.