why i always have a red cross while i am downloading

azn_mafia88

i have read the forum.公仔箱論壇) t9 w& {7 ^# i' T5 C+ B
they say the "red cross" mean no space on your computer# x- X) C5 H% `, Y  m
, {2 ~9 {2 C% P) Z) D
but my harddisk is not full...how come it still doing that