Thought you knew about closing apps from the taskbar.

What I'm finding troublesome - it seems that all apps now stay active. Even those that don't really need to. (Stanza)

I'm pretty much convinced that the clutter of unclosed apps eventually causes problems. Several times I've seen my touch4 get a little slow/wonkey only to have the problem solved by a restart. The touch2 with ios3 never had that kind of problem.