Ive been having the same problem for a month now..have been continuously trying to download the same movie over and over..originally it was fine..was about 60 percent downloaded, and I decided to preview it..well, that did something and knocked it down to like 30 percent..then it seemed like it was never going to go any higher..so I cancelled it, deleted the incomplete file, and tried again..and have tried a few other times since then..for two or three days at a time,itll fluctuate between two different percents, before eventually getting past that and going up one..but Im beginning to think it may be a year before I have this whole file..its maddening!!