ToXia ~ # emerge -av xfce4

These are the packages that would be merged, in order:

Calculating dependencies... done!
!!! Error: circular dependencies:

ebuild / sys-apps/dbus-0.62-r1 merge depends on
   ebuild / x11-libs/qt-3.3.6-r2 merge (hard)
   ebuild / x11-libs/qt-4.1.4 merge (hard)
ebuild / xfce-base/xfce4-4.2.3.2 merge depends on
   ebuild / xfce-base/xfprint-4.2.3 merge (hard)
ebuild / net-print/foomatic-filters-ppds-20060720 merge depends on
   ebuild / net-print/foomatic-filters-3.0.20060720 merge (hard)
   ebuild / net-print/cups-1.2.4 merge (soft)
ebuild / net-print/cups-1.2.4 merge depends on
   ebuild / sys-apps/dbus-0.62-r1 merge (hard)
ebuild / app-text/ghostscript-gpl-8.54 merge depends on
   ebuild / net-print/cups-1.2.4 merge (hard)
ebuild / app-text/a2ps-4.13c-r5 merge depends on
   ebuild / virtual/ghostscript-0 merge (hard)
ebuild / virtual/ghostscript-0 merge depends on
   ebuild / app-text/ghostscript-gpl-8.54 merge (hard)
   ebuild / net-print/cups-1.2.4 merge (soft)
ebuild / xfce-base/xfprint-4.2.3 merge depends on
   ebuild / app-text/a2ps-4.13c-r5 merge (hard)
ebuild / x11-libs/qt-3.3.6-r2 merge depends on
   ebuild / net-print/cups-1.2.4 merge (hard)
ebuild / x11-libs/qt-4.1.4 merge depends on
   ebuild / net-print/cups-1.2.4 merge (hard)
ebuild / net-print/foomatic-filters-3.0.20060720 merge depends on
   ebuild / net-print/cups-1.2.4 merge (hard)
   ebuild / virtual/ghostscript-0 merge (hard)