Stable might not be quite the correct term. I mean that 0.16 has been out long enough for major bugs to have been ironed out so there are no nasty surprises, whereas 1.0 is/was relatively new release and untested with Deluge so issues can/have cropped up. It's hard because we obviously need users to test it but at the same time don't want to have to be constantly chasing version changes.
I think libtorrent 1.0.2 is really better than 0.16.17,
Ok that's good to know, thanks
I'm glad to be helpful.
I noticed that libtorrent 0.16.18 has been released, maybe it works better than 0.16.17.
Again, thank you very much for your incredible work with Deluge.
I also confirm that upgrading to libtorrent 1.0.2 fixed the problem. Uploads are fast, and Deluge is stable. It would be nice to have this version in the PPA, because so far, the version available for Ubuntu 14.04 (standard repos or PPA) is unusable for a seedbox.