After last nights update. Every time I quit an app it goes into the new multi task bar. For some reason I had assumed you had to to something special to put an app in there you wished to come back to in a minute. But it seems that every app I run, and then close (by pressing home) goes in there. So I have a long line of icons left in there that I don't need or wish to go back to rather than just the ones I do want. Is this normal, or am I doing something wrong?