Problem downloading

First off, I have to state that I loved this game when I played it on the xbox.

My issue, however, is that Ive been attempting to download this off and on for about three months, and every time it gets to approximately 1.06 GB it continues downloading until it gets to 1.08 GB then it goes back to 1.06 and the cycle continues for about half an hour. I dont know if the version Im downloading is corrupted, or if its just my computer or what.

Im using a MacBook Pro OS 10.6.8 2.5 Ghz IC2D with 4GB 667MHz DDR2 SDRAM GeForce 8600M GT

Jygalag about Star Wars™: KOTOR, v1.3.8