I just got my Pi and I'm not getting any sound, either. I've checked alsamixer, did a modprobe, and checked the preferences in audacious and VLC. I tried using the audio out on my monitor and the jack on the Pi itself. Nothing.

The new image still has the same problem. Since someone suggested that even with the correct rating, one adapter could simply not work well with the unit, I'm going to go look for another one somewhere.

Thanks for the responses. That was fast! :-D It looked like I had a recent firmware version (dated August this year), but I ran rpi-update anyway, and my RPi wouldn't boot. It just sat there blinking the OK LED in a series of 5-6 blinks. I'm trying a new image on my SD card, as my first guess would ...

I've seen information about keys failing or sticking (producing things like "apt-geeeeeeeeeeeeeeeeeeeeeeeeeeee" or whatever) being related to the power supply; however, I'm using the wall outlet adapter and cord that came with my Nook. The adapter is rated for 5V, 0.85A. It seems this should be suff...