BUG

since 3.7.2, there seems to be some serious trouble with WinScp: when I try to log in, it only works 1 time out of 3. The other two times, the initial log in windows will simply disapear, but winscp.exe will continue to run in the taskbar. I have to end the process and try again...

Please post a log file. What version were you using previously? Can you find out in what version was the problem introduced?