On the amd64 bit there is "problem" with emerge, or maybe more specifically as you mentioned with /etc/portage/postsync.d/q-reinitialize, that it is not quit enough with -q option. $ emerge --sync -q q: Updating ebuild cache ... q: Finished 25555 entries in 0.290815 seconds On the x86 it is quite. Reproducible: Always
1) Cf. bug #245491. 2) Nothing to do with amd64.
*** This bug has been marked as a duplicate of bug 235269 ***