en regardant le fichier de log rutorrent-error j'ai ceci :
root@nux:/var/log/nginx# tail -n 50 rutorrent-error.log
2015/02/04 04:23:57 [crit] 4268#0: *6 connect() to unix:/var/run/php5-fpm.sock failed (2: No such file or directory) while connecting to upstream, client: XXXXXXXXXX, server: _, request: "GET /rutorrent/plugins/tracklabels/action.php?tracker=smteam.fr HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "xxxxx.net", referrer: "https://xxxxx.net/rutorrent/"
2015/02/04 04:23:57 [crit] 4267#0: *62 connect() to unix:/var/run/php5-fpm.sock failed (2: No such file or directory) while connecting to upstream, client: XXXXXXXXXX, server: _, request: "GET /rutorrent/plugins/tracklabels/action.php?tracker=t411.me HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "xxxxx.net", referrer: "https://xxxxx.net/rutorrent/"
2015/02/04 04:23:57 [crit] 4267#0: *64 connect() to unix:/var/run/php5-fpm.sock failed (2: No such file or directory) while connecting to upstream, client: XXXXXXXXXX, server: _, request: "GET /rutorrent/plugins/tracklabels/action.php?tracker=frenchtorrentdb.com HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "xxxxx.net", referrer: "https://xxxxx.net/rutorrent/"
2015/02/04 04:23:57 [crit] 4267#0: *63 connect() to unix:/var/run/php5-fpm.sock failed (2: No such file or directory) while connecting to upstream, client: XXXXXXXXXX, server: _, request: "GET /rutorrent/plugins/tracklabels/action.php?tracker=world-in-hd.net HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "xxxxx.net", referrer: "https://xxxxx.net/rutorrent/"
2015/02/04 04:23:57 [crit] 4268#0: *6 connect() to unix:/var/run/php5-fpm.sock failed (2: No such file or directory) while connecting to upstream, client: XXXXXXXXXX, server: _, request: "GET /rutorrent/plugins/cpuload/action.php?_=1423016635447 HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "xxxxx.net", referrer: "https://xxxxx.net/rutorrent/"
2015/02/04 04:23:57 [crit] 4267#0: *60 connect() to unix:/var/run/php5-fpm.sock failed (2: No such file or directory) while connecting to upstream, client: XXXXXXXXXX, server: _, request: "GET /rutorrent/plugins/diskspace/action.php?_=1423016635448 HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "xxxxx.net", referrer: "https://xxxxx.net/rutorrent/"