In portage.py, the current (2.0.49-r7) permissions are 0644, however they should be 02755. This is relevant on the chmod on lock, state, and .distcc.
already bugged carpaski about it ;)
Created attachment 18920 [details, diff] diff against .49-r9 I'll even make a diff in hopes this will get fixed.
Included for -r10 Why 2755 ? 2770 makes sense... but 2755 doesn't really seem achieve anything.