why i always have a red cross while i am downloading

azn_mafia88

i have read the forum.
/ r  c7 z: U9 V* m4 f* `( `% J5.39.217.77they say the "red cross" mean no space on your computer
: o. J' Z6 ]9 b* _8 Z5.39.217.77 & q- I8 u) o, F  y: ?2 W
but my harddisk is not full...how come it still doing that