If you receive the following error when trying to update your Arch Linux install:
error: failed to commit transaction (conflicting files)
initscripts: /etc/profile.d/locale.sh exists in filesystem
Errors occurred, no packages were upgraded.
Run the following command:
This is an issue with Arch Linux as described here: http://www.archlinux.org/news/initscripts-update-manual-intervention-required/