I've noticed this too recently and I don't think that downloading stuff in the background is causing it. I've had the spinning wheel stick around for half an hour or more. I would have expected any connections to have timed out by then.
This has been my experience also. Seems like this could hurt battery life, and wifi/3G connection speeds. I didn't notice this before in the previous IOS version.
This has been my experience also. Seems like this could hurt battery life, and wifi/3G connection speeds. I didn't notice this before in the previous IOS version.