My download speed is 70 Mbps Upload speed 7Mbps. My isp not cut off connection i set bt.tcp_rate control to false and bt_connect speed set on 15- try with default 7 same situation. 10 minutes to update all trackers and to start a download a new torrent (if i start download throw DHT or public tracker or my native trackers (there a 2) the download begin instant. The other problem: i have a little more than 2500 torrents (force seed) (not queue) private trackers and every time i started utorrent its take about prox. dmp file what cause i'm pretty sure that isn't norton, using norton with utorrent from years and had even a single problem. Nope i don't use router, from 2005 using firewall software and had no problems at all. Done norton is complete remove, if 24 hours utorrent working without glitch, stuck, freeze (not respond) - norton is blame to.