On the thread duplication issue: we're sorry about this but it's because, in the time that's elapsed between the page loading the top 10 threads on Active and the second ten threads on Active, some will have slipped from the first category to the second - and so show up again. Unfortunately, it would take a huuuuuuge amount of work/coding to fix it. For now, if you click on the 'refresh' icon in the top right of the screen, it should show you the up-to-date top ten threads again; if you really hate seeing the duplicates, this might be the best way to use Active.
What's the glitch about threads not appearing in date order - is that on Active as well?
I mostly use the mobile site too rather than the app (altho i'm on the app now to type this as I was logged out of the normal site). Agree the duplication on active convos is beyond irritating but my main bug bear is the random characters (ie Jane#653'5's)that sometimes appear in people's posts which make the words and post unreadable. It only happens on the app and until thats fixed I'll stick to the mobile site.