It is the people you a trying to download from. Most likely those computers have all of their upload slots filled so you hve to wait in line. There are a ton of reasons why a hoast may come up in a search, but cannot be downloaded from. Your best chance at succesfully downloading is to leave Xolox on 24/7. I understand that this is not a possability for some, but that is how to best increase your chances of getting you file.