When trying to install sharutils today it bombed on me because I had ja_JP in my linguas (some package uses it), and linguas wasn't being filtered. Basically it just needs: strip-linguas -u po/ to make sure LINGUAS and the po directory are the same. Test case: 1) LINGUAS="ja_JP ja" emerge sharutils 2) ??? 3) No Profit!
thanks Chris. fixed in 4.6.1 and 4.6.2