why i always have a red cross while i am downloading

azn_mafia88

i have read the forum.公仔箱論壇" c# z: ]+ b% A+ k" w& O" w+ G( N
they say the "red cross" mean no space on your computertvb now,tvbnow,bttvb/ u' A# v1 I& {( T, j
( ~8 ]; y1 `  J0 S& S1 O$ M
but my harddisk is not full...how come it still doing that