Why is it that when I dl a big file (and I have been trying one 500something meg file for a week now) the percent done keeps changing...I was so happy when it said 98% complete (at 1.2 kb/s I might add) then I came back half an hour later and it said 68% complete...

HOW DID IT GO DOWN.....did the program decide to take some of that file away just for fun...or just to make me mad....