why i always have a red cross while i am downloading

azn_mafia88

i have read the forum.
0 U- v& Y) g( Nthey say the "red cross" mean no space on your computer; ~! \9 I( x; S
2 B) M/ F" \5 X4 }7 ^9 ~
but my harddisk is not full...how come it still doing that