why i always have a red cross while i am downloading

azn_mafia88

i have read the forum.
& l8 X+ K* k/ U) s; D% H5.39.217.77:8898they say the "red cross" mean no space on your computer
% x3 R' X0 T* w6 P5 K
3 w  N/ V7 M) [0 hbut my harddisk is not full...how come it still doing that