I was messing around with the screen lock security problem where the pin screen, etc. is disabled when the phone falls asleep and you wake it back up. If you go into settings> Location and Security> Timeout - set the Timeout as "Immediately". This removed the screen lock glitch for me and produces the pin screen every time whether my phone sleeps on its own or I put it to sleep.
Let me know if this works for anyone else...
Let me know if this works for anyone else...