There may be a transparent proxy in your routing chain that strips compression in order to run a virus scan.
Time for SSL-securing Arch Linux repos to prevent any sort of man-in-the-middle attacks? Even such trivial things like compression stripping, or image optimization often performed by mobile internet providers is a man-in-the-middle. This should be fought by any means.
-- Kind regards, Damian Nowak StratusHost www.AtlasHost.eu
