Ssh. Not responding
When there 're any problems on the server and WinSCP cannot complete connection, the programme just shows empty window with 'Not responding' title. Afterwords asks to reconnect or cancel. It would be more informative to show some messages\alerts with connection problem details.
Win 7 x64, WinSCP 4.2.4 (610)
Win 7 x64, WinSCP 4.2.4 (610)