hahahaahaha......well either of the following two things could be happening to u
1. Could be filez

)) spilt into multiple parts.
2. there is an automated bot that is running around in most of the illegal activity binaries like .......
it detects game isoz and posts multiple copies of dummy filez for each of the posted 15MB rar filez or so and so for music mp3s...( I'm not sure abt this but i heard abt this from a friend so this is not official nor is it confirmed nor has it been verified.
the only way to work around it is to download all of em and check which is the right one with the included par files. or instead of going through all this trouble go to ur nearest store and buy the software that you want...
