[LAU] a NEW question about pitch and speed

This morning when I turned on my computer it started playing stuff on Pandora, but more slowly and at a lower pitch than normal. I wondered if this was just a problem with Pandora, so I checked my own song files with Amarok. Again, that music plays more slowly and at a lower pitch than I'd expect. 1-2 days ago this very same computer played at the right pitch and speed. What could have gone wrong? The built-in (only) sound card's clock is now running more slowly? Some system wide configuration changed for the sound system, and it now slows things down? If it's a configuration thing, then I didn't intend to do that, nor did I even touch the configuration. This computer runs PulseAudio on Mandriva 2009.1. The driver is snd_intel8x0. Any ideas folks? Thanks.... -- Kevin