i m really frustated by this problem.As much as i understood,U r not allowing the download from the same user account with two differnt ip's.
But i have a internet which has a dynamic ip and frequent disconnections.After each disconnection,i have to wait for atleast half an hour to start the torrents again.

The torrent which was not updated is reflected in my profile as downloading.I think when the tracker updates itself it sees that the client is not connected and it removes from the list and then only i can start the download again.

Any Solution......