gnome-screensaver sometimes freezes the desktop session when rdesktop is running

Issue

• gnome-screensaver sometimes results in the desktop session being frozen when one tries to lock the screen. It happens only when rdesktop is running

• Steps to reproduce the problem:

  • Start a rdesktop session to the windows machine and log in there

  • Click on System -> Lock Screen and do not move the mouse after the click

  • The gnome-screensaver doesn't start up and the gnome session is frozen