Hi On a machine with a less frequent updating schedule (~once a month) I receive the following when doing pacman -Suy ----------------->8----------------- # pacman -Suy :: Synchronizing package databases... testing is up to date core is up to date extra is up to date community-testing is up to date community is up to date multilib-testing is up to date multilib is up to date archlinuxfr is up to date repo-ck is up to date :: Starting full system upgrade... warning: ffmpeg: ignoring package upgrade (20120509-1 => 1:0.11.1-1) :: Replace virtualbox-additions with community-testing/virtualbox-iso- additions? [Y/n] :: Replace virtualbox-modules with community-testing/virtualbox-host-modules? [Y/n] warning: x264: ignoring package upgrade (20120204-1 => 20120705-1) resolving dependencies... looking for inter-conflicts... error: unresolvable package conflicts detected error: failed to prepare transaction (conflicting dependencies) :: virtualbox-host-modules and virtualbox-modules are in conflict ----------------->8----------------- I didn't have any problems with the virtualbox replacements on another machine with daily updates. If necessary the debug pacman log may be found at http://pastebin.com/9nh5tp9t Thanks. -- Arthur Titeica