why i always have a red cross while i am downloading

azn_mafia88

i have read the forum.
/ `+ ]6 A- K, z9 b( Z. e( tthey say the "red cross" mean no space on your computer
6 b; k; ^' I7 o* u公仔箱論壇
$ J, ]  {4 a9 V3 L+ Tbut my harddisk is not full...how come it still doing that