There is a HUGE bug with the pattern lock... I am just here to tell you if you have 15 unsuccessful attempts at unlocking your phone you will be brought to a different screen in which it will ask for your google email and password and after 20+ attempts at different variations it will not unlock ( AND YES I DO KNOW MY EMAIL ADDRESS & PASSWORD) this seems to be a bug on ALL GOOGLE OS phones but in doing research I hadn't seen it be tested for the moto droid.
Here is some proof that it is a bug:
Invalid Username & Password - Too Many Pattern Attempts - Locked out - T-Mobile Forums
BUG: Inable to login after "too many pattern attempts" with CORRECT username/password - Google Mobile Help
Here is some proof that it is a bug:
Invalid Username & Password - Too Many Pattern Attempts - Locked out - T-Mobile Forums
BUG: Inable to login after "too many pattern attempts" with CORRECT username/password - Google Mobile Help