Here’s a little something I’ve only just noticed in iOS 5 on my iPad Deux.
It no longer clears the ‘backgrounded’ apps from the Multitasking Bar when you restart the iPad. And yes, yes – I do realize that iOS does not yet have true multitasking and these apps are not really running in the background – just to get that out of the way.
My experience says that despite apps not truly ‘running’ in the background, they are still using up some system resources when left in whatever their less than fully active state is in the Multitasking Bar. They are using up some level of available program memory and draining the battery.
Up to now there have been two ways to manage the number of apps ‘resident’ in the MT bar – by manually quitting each or any desired after a tap and hold in the MT bar, or via a restart of the iPad (or iPhone). A restart could sometimes be the quickest method, if there were a very large number of apps in the MT bar.
And now that no longer seems to be a viable method in at least this (beta 7) version of iOS 5. I’ll keep looking at this, but I’ve tested several times now and found that the same set of apps that were resident in the bar before a restart are all still shown there once the iPad is back up.
‘Shown’ may be an important detail here – as apps do not appear to remember their state after a restart. Even so, if this stays this way on the final release of iOS 5 it will at the very least lead to some major confusion for users – as up to now a restart cleared out the apps shown in the MT bar.
Update: My mistake on this one. This is not new behavior in the iOS 5 betas. I had not noticed that this was already standard in iOS 4.x. Apologies for the oversight.