Rather than just straight-off copying AI_Sleeper's settings, you should run the utorrent setup guide (press Ctrl+G) and use the settings it suggests there. The optimum number of connections, upload slots, etc, all depends entirely on your specific internet connection.
Also, Bozobub, we've probably had this discussion dozens of times now, but pretty much the only person who thinks utorrent 3.x is notorious for seeding and leeching issues is you. It works fine for everybody else.
Now, one obvious thing to test which nobody else has suggested yet - have you tried downloading any other BakaBT torrents? You say torrents from other sites are working fine, but it sounds like you've only tried the one BBT torrent. It might well just be that the SAO torrent is slow to download for some other random reason totally out of your control - you do get cases where a seemingly well-seeded torrent is really slow for no discernible reason, and there's not really much you can do about it.