As you may be a person who has used these devices in the past they have since had the need to use more battery life , by closing all running apps it saves on battery life and at the same time save on the life span off the product due to not needing to charge as frequent .. I have also noticed the apps I am using when all others are closed run smoother and faster ..
Please be advised that the last post in the thread you responded to was dated September 2012.
