I don't know what the problem is for everyone else here, but I have yet to have any problems with PulseAudio. It "just worked" as the default on Ubuntu and Kubuntu 9.04, even in virtual machines. Before PulseAudio, I had to dig into config files to get my sound card working, and if I didn't do that, only one application would have sound at a time. So maybe I am missing something, but from where I am sitting, PulseAudio is definitely an improvement.

That's nice, but if they can't scale it, or create entanglement between the qubits, it isn't going to be of any immediate use. Some guys at IBM built a quantum circuit to factor the number 15, which took seven qubits, and that was not a general algorithm. The general algorithm would take 3-10 times (you'd want error correction for larger numbers) the number of bits needed to represent the number.

My main PC is a headless Ubuntu server. I connect to it and stream media from it to other more disposable machines that exist either purely for gaming or portability.