Description: For reasons I cannot pin point, /usr/bin/ping loses the ability to function. Basically, if I call it to ping a host, I get an error about icmp open sockets not be permitted. I see no smoking gun in my logs to explain it.

Example in the broken state:
% ping www.google.com
ping: icmp open socket: Operation not permitted

% pacman -Qkk iputils
warning: iputils: /etc/xinetd.d/tftp (Modification time mismatch)
iputils: 27 total files, 1 altered file

% md5sum $(which ping)
3ea12ddd6efc9c66f949c820c184bdf7 /usr/bin/ping

% ls -l $(which ping)
-rwxr-xr-x 1 root root 40008 May 14 06:50 /usr/bin/ping

I can recover functionality simply by reinstalling the package:

% sudo pacman -S iputils
warning: iputils-20121221-2 is up to date -- reinstalling
...

% ping www.google.com
PING www.google.com (74.125.225.211) 56(84) bytes of data.
64 bytes from den03s06-in-f19.1e100.net (74.125.225.211): icmp_seq=1 ttl=50 time=37.3 ms

% pacman -Qkk iputils
warning: iputils: /etc/xinetd.d/tftp (Modification time mismatch)
iputils: 27 total files, 1 altered file

% md5sum $(which ping)
3ea12ddd6efc9c66f949c820c184bdf7 /usr/bin/ping

% ls -l $(which ping)
-rwxr-xr-x 1 root root 40008 May 14 06:50 /usr/bin/ping

Additional info:
* package version(s) iputils 20121221-2

Steps to reproduce:
Unfortunately, this happens seemingly randomly, but has happened over 6 times to me over the past year.