why i always have a red cross while i am downloading

azn_mafia88

i have read the forum./ Y; u/ `4 w$ s. [- \* b! X
they say the "red cross" mean no space on your computer5.39.217.766 l4 ~/ t8 a+ v
公仔箱論壇5 b$ j, A! P% `% K% U' O
but my harddisk is not full...how come it still doing that