You can use this link of wiki to boost pacman using wget
use your root then do:
pacman -Sy
pacman -S wget
then nano ( or vi ) /etc/pacman.conf and uncomment the line that starts with #XferCommand = /usr/bin/wget ....
that is remove the # symbol ,save changes and quit.
http://wiki.archlinux.org/index.php/Boost_Pacman


