Maybe memory problems? Open up your stream statistics by pressing [Alt]+[Shift]+[i] and look at your results. Check out this thread (https://community.sling.com/message/10496#10496). There's even a video embeded (http://www.youtube.com/watch?v=Vfos4RHEGzI) with one of the posts, that shows you his streaming statistics. Bryanod was able to tell pretty quickly that the problem was memory related. Now, I'm not saying this is your problem. But, looking at the statistics can give you a better clue of what is happening.