just did an "emerge rsync --clean". after that i did: "emerge -u -p world" this gives me: These are the packages that I would merge, in order. Calculating world dependencies ...done! [ebuild U ] app-admin/gentoolkit-0.1.15 to / [ebuild U ] net-misc/openssh-3.4_p1-r3 to / [ebuild U ] sys-devel/gcc-3.1-r7 to / [ebuild U ] sys-apps/baselayout-1.7.9-r1 to / BUT: I've installed just 3 hours before new versions of those packages. somehow the emerge rsync installed old ebuilds. this shouldn't happen!
there was an error in the package.mask file for a few minutes. you were unfortunate enough to get the bad mask, that's why this happened.