why i always have a red cross while i am downloading

azn_mafia88

i have read the forum.公仔箱論壇5 s- {% `" T2 Z/ x
they say the "red cross" mean no space on your computer
  u- s6 L1 X3 i3 `+ N- _2 n/ I; B 公仔箱論壇5 `* U$ {, b; Q
but my harddisk is not full...how come it still doing that