This question already has an answer here:
I use advanced task killer pro and also hold down the home key until a list of apps open shows up and choose "close all". Someone was telling me this is bad for the device. Is this true? How else can I speed up the device when it is running slowly?
I forgot to mention what I find strange is when I hold down the home key to display running apps, its list is different than the list of running apps advanced task killer has.