When I do emerge -uDN worl the system need upgrade libcroco and since
2 mounth ago tell me ... this:
>>> Completed installing libcroco-0.6.1 into /var/tmp/portage/dev-libs/libcroco-0.6.1/image/

strip: i686-pc-linux-gnu-strip --strip-unneeded -R .comment
usr/lib/libcroco-0.6.so.3.0.1
usr/bin/csslint-0.6
usr/lib/libcroco-0.6.a
removing executable bit: usr/lib/libcroco-0.6.la
Traceback (most recent call last):
File "/usr/bin/emerge", line 6518, in ?
retval = emerge_main()
File "/usr/bin/emerge", line 6512, in emerge_main
myopts, myaction, myfiles, spinner)
File "/usr/bin/emerge", line 5971, in action_build
retval = mergetask.merge(pkglist, favorites, mtimedb)
File "/usr/bin/emerge", line 3849, in merge
prev_mtimes=ldpath_mtimes)
File "/usr/lib/portage/pym/portage.py", line 4352, in doebuild
vartree=vartree, prev_mtimes=prev_mtimes)
File "/usr/lib/portage/pym/portage.py", line 4543, in merge
mydbapi=mydbapi, prev_mtimes=prev_mtimes)
File "/usr/lib/portage/pym/portage.py", line 8820, in merge
cleanup=cleanup, mydbapi=mydbapi, prev_mtimes=prev_mtimes)
File "/usr/lib/portage/pym/portage.py", line 8183, in treewalk
slot_matches = self.vartree.dbapi.match(
File "/usr/lib/portage/pym/portage.py", line 5898, in match
mymatch = [cpv for cpv in mymatch \
File "/usr/lib/portage/pym/portage.py", line 5994, in aux_get
for k, v in izip(aux_keys, self._aux_get(mycpv, aux_keys)):
File "/usr/lib/portage/pym/portage.py", line 6008, in _aux_get
raise KeyError(mycpv)
KeyError: 'dev-libs/libcroco-0.6.1'

I have to compile the packets with emerge packet1 packet2 packet3 ...
and not with emerge -uDN world and without do emerge libcroco.

thnx