Re: m redirecting to www?
Then you seem to have a bug, because it's not working like that.
We hear you.
We've now tuned our edition setting functionality a little bit further as to not disrupt the navigation flow on mobile devices.
So, if you're on a mobile device and visit – say – the homepage, then go on a story and click the comments links, you'll be shown the mobile site. If on that same story you click the masthead logo or a section index page, you'll get the mobile version.
To have the same happen on your desktop size device, you'll have to opt in and click the "Mobile website" link at the bottom of most pages (not article pages, as those only exist on www now, and they're responsive).