oil from weep hole on ktm 450

hi my friends 04 ktm 450 exc has oil coming out of the water pump weep hole, not alot. i know that i have had a little of coolant come out of mine when it was almost new, but it stopped so i never thought anything of it. can anyone give me any idea what is wrong with this bike and what i need to do?

yeah i will tell him to keep riding the bike and keep an eye on it. the next time i go to the ktm dealer i am thinking of going to the lansing ktm, i have heard nothing but good things about them. i wish i would have bought my bike there.