Package xfce4-utils is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
  xfce4-session:i386 xfce4-appfinder:i386 libxfce4ui-utils:i386 xfce4-session
  xfce4-appfinder libxfce4ui-utils