Ran into a similar issue with NX and I was able to resolve it by setting up my NX client to execute the following rather than use the default GNOME options set in the freenx node:
gnome-session --session=classic-gnome
This allows the password prompts to display.
Ran into a similar issue with NX and I was able to resolve it by setting up my NX client to execute the following rather than use the default GNOME options set in the freenx node:
gnome-session --session= classic- gnome
This allows the password prompts to display.