Why not? Because of the problems due to running updated software or are you aware of some problem with packages? I ask because I have run Arch in production fo

Why not? Because of the problems due to running updated software or are you aware of some problem with packages? I ask because I have run Arch in production for the past 3 years on about 10 servers without any problems (knock on wood). Only official packages and always after quickly testing the latest pacman -Syu on a test machine. Compare to a couple Ubuntu servers I have to deal with I have to go out of the way to get more recent packages, which are often unofficial (I avoid having to build packages where possible).