blocks B     ] net-dns/avahi (is blocking net-misc/mDNSResponder-107.6-r5)
[blocks B     ] kde-misc/kdnssd-avahi (is blocking kde-base/kdelibs-3.5.8-r10)
[blocks B     ] net-misc/mDNSResponder (is blocking net-dns/avahi-0.6.21)

Total: 492 packages (328 upgrades, 4 downgrades, 56 new, 5 in new slots, 99 reinstalls, 3 blocks), Size of downloads: 866,846 kB
Portage tree and overlays:
 [0] /usr/portage
 [1] /usr/portage/local/layman/sabayon

!!! Error: The above package list contains packages which cannot be installed
!!!        at the same time on the same system.