Slow screen lock/unlock

[Richard Gaskin]

>If I comment out either the lock screen or the unlock screen then the
>whole thing takes 2 milliseconds and if I comment out the unlock
>screen line then it takes less than one millisecond. 
> 
>In that case, why bother to lock at all? One millisecond isn't
>perceptible and it will look instantaneous to the user.

It may be helpful to think of lock screen/unlock screen as "redraw 
screen".    One of the reasons for the broad variance of execution time 
is that the time is dependent less on the engine interpreting the 
command than on what's on the card.

--
  Richard Gaskin
  Fourth World Media Corporation
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  Rev tools and more: http://www.fourthworld.com/rev