Comment 63 for bug 61381

I can confirm the problem being reported for VNC. The solution is this:

In your ~/.vnc/xstartup file put the following:

#!/bin/sh

vncconfig -iconic &
eval `dbus-launch --sh-syntax --exit-with-session`
gnome-session &

Then chmod 744 xstartup, and your problem should be fixed. Again, this only applies to the VNC issue.