richsadams
iPF Noob
At the moment the only way to do that (if your iPad is not jailbroken) is to show the open apps (double click the home key) tap and hold any app icon until they all start to jiggle and then touch the X in the upper LH corner of each app you want to close. Again, most unused apps are in a "wait state" where the run state is stored in RAM for reloading. In other words they aren't doing anything and use very little if any memory (GPS apps, etc. being the exception). If memory gets low the iPad will unload these apps to make way for a new one.Richsadams, the link you mentioned about printing said to double click home key to show running tasks, question is if you want to end running tasks in background, is there a way to do that?
I say "at the moment" because there are already apps for jailbroken iPads that will kill all apps at once (or selective tasks) and it's possible that option will be incorporated in iOS 5 which is due for release shortly.
Hope that helps!