I guess everybody now knows that we have a new repository called multilib. What does that have?
A multilib toolchain that supports both the 32bit (x86) and 64bit (x86_64) formats. This was the only requirement that we missed until now.
pacman -S virtualbox-ose
P.S for all users that are using my unofficial vbox repo, i suggest to remove it from your pacman.conf because i would shutdown it in the next days.