mahdoum
Don't know if you this, but most smart phones / s60 nokia phones have a built in task manager. All you have to do is keep pressing the menu for a while then you will see what programs are open. (To close any program just press C)
You can also download free task managers (I use task spy) they're great to have on a phone as you can always close unwanted programs and see what is running in the background (just like a pc).
If you would like the task manager just msg me.