# emerge -uD world
Calculating world dependencies -
!!! Multiple versions within a single package slot have been
!!! pulled into the dependency graph:

('ebuild', '/', 'sys-kernel/linux-headers-2.6.19.2-r2', 'merge') pulled in by
  ('ebuild', '/', 'media-video/mplayer-1.0.20070427', 'merge')

('installed', '/', 'sys-kernel/linux-headers-2.6.21', 'nomerge') pulled in by
  ('installed', '/', 'sys-apps/hal-0.5.9-r4', 'nomerge')
  ('ebuild', '/', 'media-video/transcode-1.0.3', 'merge')
  ('ebuild', '/', 'sys-apps/raidutils-0.0.6-r1', 'merge')
  ('ebuild', '/', 'sys-apps/iproute2-2.6.20.20070313', 'merge')
  ('ebuild', '/', 'media-libs/xine-lib-1.1.6', 'merge')
  ('ebuild', '/', 'net-misc/openvpn-2.0.7-r2', 'merge')
  ('ebuild', '/', 'sys-libs/libcap-1.10-r10', 'merge')
  ('installed', '/', 'media-tv/linuxtv-dvb-headers-3.1', 'nomerge')