I am using winscp version. It is wonderful. I have found one small bug, when it is reconnecting.
When I was trying to copy a file from windows to linux system (that file already exists in linux folder), the connection was reset. So Winscp was asking to reconnect. I reconnected the system and Winscp immmediatley copied the file to linux system. It didnt show the "file already exists" warning.
Once connection is established and when I am copying the file that time I am getting "file already exists" warning. You may solve that issue in your next version release.
Thanks and Regards,