Just saw (via Reuters) that Sunrocket appears to have closed down.
Recently, I posted about the perils of IP and the US Patent office, and Vonage was still holding on.
Hype has to be balanced with flawless execution, which is certainly a hard thing to do. If you have more money, you can weather some large mistakes. We'll have to see what the news is as this story develops, certainly at this early stage almost anything could be "blamed" for what has happened to Sunrocket. The Truth will probably take some time to come out.