[blocks B     ] net-wireless/bluez ("net-wireless/bluez" is blocking net-wireless/bluez-libs-3.36, net-wireless/bluez-utils-3.36)
[blocks B     ] net-wireless/bluez-utils ("net-wireless/bluez-utils" is blocking net-wireless/bluez-4.39)
[blocks B     ] net-wireless/bluez-libs ("net-wireless/bluez-libs" is blocking net-wireless/bluez-4.39)

...
Conflict: 32 blocks (3 unsatisfied)
...
 * Error: The above package list contains packages which cannot be
 * installed at the same time on the same system.

  ('installed', '/', 'net-wireless/bluez-libs-3.36', 'nomerge') pulled in by
    >=net-wireless/bluez-libs-2.25 required by ('installed', '/', 'net-wireless/libbtctl-0.9.0', 'nomerge')
    >=net-wireless/bluez-libs-3.12 required by ('ebuild', '/', 'gnome-base/gvfs-1.0.3-r2', 'merge')
    net-wireless/bluez-libs required by ('installed', '/', 'app-mobilephone/obexftp-0.22', 'nomerge')
    (and 2 more)
  
  ('installed', '/', 'net-wireless/bluez-utils-3.36', 'nomerge') pulled in by
    net-wireless/bluez-utils required by world
    >=net-wireless/bluez-utils-2.25 required by ('installed', '/', 'net-wireless/libbtctl-0.9.0', 'nomerge')
  
  ('ebuild', '/', 'net-wireless/bluez-4.39', 'merge') pulled in by
    net-wireless/bluez required by ('ebuild', '/', 'app-pda/libsyncml-0.4.6-r1', 'merge')