I'm having the same problem, my Procaster says that my internet connection is too slow and drops out every two minutes or so.
These are my results:
I was asking some of my friends about it and they told me I had the wrong 'type' of internet for livestreaming, which totally baffled me. I'm not an idiot with computers, but this puzzled me XD I just have standard wireless broadband.
I had my stream on standard quality and was streaming Photoshop use with no audio playing - I would have liked to put it on, but I thought it would make things even worse. I'm using a Windows 7 PC with 6GB RAM if that has any relevance.