starting xfce4 reboots machine

[Gary Aitken]

> I updated to xfce4.10 using amd64 packages and everything seems to work,
> except for some reason "startxfce4" is missing.... but i can get it to
> start fine by putting "exec xfce4-session" in my .xinitrc.. anyone else
> experience this issue?

%which startxfce4
/usr/local/bin/startxfce4

installed from
  ports/x11-wm/xfce4
I think as a dependency on
  ports/x11-wm/xfce4-session