I've got a strange little bug in UT2004, haven't been able to figure it out and its driving the OCD in me absolutely mad. For weapons that you aren't carrying, usually its just a blacked out version of the weapon on the HUD. On my game, the weapons aren't there at all, the squares are completely missing and I only see the squares for weapons I own. It looks bizarre. Does anyone know how to fix that? Thanks in advance.
Using + and - (default keys for that) can add/remove HUD elements to maximize or minimize the HUD on-screen. Try to press + the next time you're ingame and see if that re-adds the inactive weapon slots. ;)