System:
Ubuntu: 11.04
GCMD version: 1.4 git 2010-12-18

Reproduce:
1. Create a connection using a password for SSH and fill in all information.
2. Edit the connection after the save and remove the "password" so that gcmd is going to ask for a password.
3. Restart gnome-commander. At some point you could get a crash simular to the below:

Gdk-ERROR **: The program 'gnome-commander' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadLength (poly request too large or internal Xlib length erro'.
  (Details: serial 23679 error_code 16 request_code 7 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)
aborting...

(process:14001): Gdk-ERROR (recursed) **: The program 'gnome-commander' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadRequest (invalid request code or no such operation)'.
  (Details: serial 23680 error_code 1 request_code 0 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)
aborting...
Multiple segmentation faults occurred; can't display error dialog

Tried running this using --sync but without any result.

This bug is related to the problem where password is being set wrong in bug: https://bugzilla.gnome.org/show_bug.cgi?id=626390