TinyLock is a samll utility for BlackBerry, locks the BlackBerry keyboard when the backlight turns off.
A useful function: Just do a lock keyboard when you are on the Homescreen, so when your read rss news, write message etc, when the backlight turns off it will not lock your keyboard automatically.
TinyLock also supports "Don't lock keyboard" when the USB is connected option. It's free
BTW. You need os 4.2 or higher to run it.
the alx/cod file is here
ota download is here