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After my upgrade from Ubuntu 12.04 LTS to 12.10, Transmission won't download from an anti-leech tracker (ALT). If I download a torrent via Magnet Link, everything works fine, but if I download from that ALT, it doesn't.

The tracker will return OK and also return the List of Seeders and Leechers (each greater than 20), but no peers to download from are returned. Everything worked fine previous to the upgrade.

For testing purposes I downloaded KTorrent. The same occured there.

I had Transmission running for as long as 10 hours and no success.

My port is open and even if the firewall is disabled, this still happens.

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Unfortunatley I'm still searching for a solution. though it really is a Ubuntu-related problem. If I boot Windows on the same machine, at least uTorrent will connect to the ALT. – Marvin Dickhaus Dec 14 '12 at 16:40
Did you try ktorrent, deluge or qbittorrent, just to see if it is only with transmission or all torrent clients? – Luis Alvarado Dec 14 '12 at 22:31
@LuisAlvarado I already stated this im my question. "For testing purposes I downloaded KTorrent. The same occured there." I did also try another torrent application. Same same everywhere. – Marvin Dickhaus Dec 15 '12 at 12:10
@MarvinDickhaus - Ok then we could be having one of this problems: Router or ISP might be limiting you via a port, checking packets, etc.. Try to use a torrent client with advance features like ktorrent and look for the options that are to protect you from speed limiting factors like ISP, Router, Ports, etc.. There are 2 options that are very important, DHT and "Use protocol Encryption". Do not activate to allow unecrypted protocol while you are testing. Try to download other torrent files for the test that are not on your list and give it 10 minutes time. – Luis Alvarado Dec 15 '12 at 15:20
@LuisAlvarado I tunnel all traffic through an OpenVPN. So my ISP can't even do a paket inspection. If or if I'm not tunneling the traffic doesn't matter on the same machine with windows. Also I had Transmission and Ktorrent running for a long period of time with no success. – Marvin Dickhaus Dec 15 '12 at 15:55
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