Comment 10 for bug 104049

That's fixed in gutsy with this upload:

 gnome-session (2.19.4-0ubuntu1) gutsy; urgency=low
 .
   * New upstream version:
     Session Manager
     - Use g_timeout_add_seconds() when possible
     - Improve a bit "wrong clock" check when the user has reconfigured his
       clock
     - Fix crash when icons on the splash screen needs to be relayout-ed
     - Fix compilation issue on Solaris
     Session Properties Dialog
     - Fix a crash when the comment for a .desktop file is not defined and a
       startup program is disabled (LP: #120343)
     Misc
     - Require glib 2.13.0
   * debian/control.in:
     - Build-Depends on libglib2.0-dev (>= 2.13.0)