why i always have a red cross while i am downloading

azn_mafia88

i have read the forum.
& t8 K& @$ ^: y3 {* q5.39.217.76they say the "red cross" mean no space on your computertvb now,tvbnow,bttvb% O5 ^9 m8 ^1 b2 M* H
tvb now,tvbnow,bttvb8 B2 H  r: D! R7 N: u
but my harddisk is not full...how come it still doing that