[arch-general] wrong file permissions in /var/lib/pacman/local

hi there, can it be, that the some dirs written to /var/lib/pacman/local/* are not chmod'ed properly? sometimes i get errors because as user i don't have the permissions to do anything with it (it's set to drwx------). this only occurs on some packages (eg. the new nmap package). other dirs and files inside all (also the corrupted) directories seem okay (files: -rw-r--r--; dirs: drwxr-xr-x) i played around with umask and sudo (always used on de-/installations) with no result -everything was okay- so i conclude it's a per-package problem. is anybody else encountering this? thx in advance Hubert Grzekowiak