I encountered the exact problem as the previous user re: server timeout, which I increased the time to 120 but still, no luck. I was able to login, but then, when trying to transfer a folder, it just sat there forever, and then finally, says
Error: Connection closed by server
Error: Failed to retrieve directory listing
Then, if I disconnect from the server, I will not able to login for 10min or so. What am I missing?