If you are trying out our proxies and get an error indicating there are "Too many open files" we apologize, but this is an indication that our server is running at maximum capacity. Best to retry or come back later when things will be less busy. Our web accelerator cache is also hitting capacity at times, and we are currently working on a better design to address this. Eventually we expect to have much greater capacity - perhaps even unlimited capacity - as we move to a "cloud computing" infrastructure.