I have a problem with Mac OS X (Leopard) on my MacBook Pro: when I go away for a few minutes my laptop automatically sleeps and all my running applications stop working (such as my downloads). What should I set so that it works like Windows and it shows the lock screen but applications continue doing their job, such as downloading.
P.S.: I downloaded the lock screen widget and when I use it my applications don't close but I lose my internet connection until I unlock my laptop.