$ sudo pacman -Su pacman
:: The following packages should be upgraded first :
    pacman
:: Do you want to cancel the current operation
:: and upgrade these packages now? [Y/n]

resolving dependencies...
looking for inter-conflicts...

Targets (5): bash-4.2.045-1  filesystem-2013.03-2  glibc-2.17-5  linux-api-headers-3.8.4-1  pacman-4.1.0-2

Total Download Size:    8.91 MiB
Total Installed Size:   43.96 MiB
Net Upgrade Size:       -0.70 MiB

Proceed with installation? [Y/n]
:: Retrieving packages from core...
 linux-api-headers-3.8.4-1-i686            618.6 KiB  58.4K/s 00:11 [######################################] 100%
 glibc-2.17-5-i686                           7.7 MiB  49.0K/s 02:41 [######################################] 100%
 pacman-4.1.0-2-i686                       615.5 KiB  52.5K/s 00:12 [######################################] 100%
(5/5) checking package integrity                                    [######################################] 100%
(5/5) loading package files                                         [######################################] 100%
(5/5) checking for file conflicts                                   [######################################] 100%
error: failed to commit transaction (conflicting files)
filesystem: /etc/profile.d/locale.sh exists in filesystem
filesystem: /lib exists in filesystem
filesystem: /var/lock exists in filesystem
filesystem: /var/run exists in filesystem
Errors occurred, no packages were upgraded.