There is a problem in connection 4.x.x (and with 4.3.3).
- Winscp enter username and password.
- Hide the connection (console?) window.
- The application will be completty hidden, and if you waiting e.g. for 5 minutes, the application will be show with file panels.
It is only, if you started winscp. If winscp is running, the next connection is working fast. I think it source is the unreachable network drives?