XP Automatically Locking Screen

[AMV]

I have a Sony Vaio laptop running Windows XP, SP1. After a
brief time running idle, it locks the screen, same as if
punching WindowsKey-L or Ctrl-Alt-Del, then hitting 'lock
computer.' It isn't a screen saver, one isn't even active.
So where is this setting maintained, and how can I turn it off?

Thanks.
-AMV

 

[Malke]

I have a Sony Vaio laptop running Windows XP, SP1. After a
brief time running idle, it locks the screen, same as if
punching WindowsKey-L or Ctrl-Alt-Del, then hitting 'lock
computer.' It isn't a screen saver, one isn't even active.
So where is this setting maintained, and how can I turn it off?

Thanks.
-AMV

Actually, it is a blank screen saver and the option to lock the computer
is on the Screensaver tab in the Display applet (Control Panel).

Malke