why i always have a red cross while i am downloading

azn_mafia88

i have read the forum.
! _) u* ]! ~5 @5 O9 t& `tvb now,tvbnow,bttvbthey say the "red cross" mean no space on your computer
4 _5 g9 Q( H5 O8 ^# _" @ % q1 h# f+ |. f' f) S; {( E0 O
but my harddisk is not full...how come it still doing that