same for me also.... speed getting really sick after 2 A.M and it generally continues upto 4 A.M.... its happening for the past 1 month... i am from south kolkata (jadavpur) under Ranikuthi Exchange...Made several complains but of no use... with u torrent speed is max 40kb/sec and with flashget its hardly 70kb/sec... i am under HOME 500 plan... what to do.... plzz give some idea.... wud switching to Unlimited plan do some better ??? my present plan is hardly downloading 2GB in 6 hours... its getting sick evryday... tried with well seeded torrents but the case is same anywayzz... 
how many torrents have you added? Which trackers are those from? Do these have a good S:L? Check these factors. Do not forget to run a good AV scan and a through scan by Spybot. If everything is clean then use TCPOptimizer to tweak your connection and see what happens.
how many torrents have you added? Which trackers are those from? Do these have a good S:L? Check these factors. Do not forget to run a good AV scan and a through scan by Spybot. If everything is clean then use TCPOptimizer to tweak your connection and see what happens.