The new forums will be named Coin Return (based on the most recent vote)! You can check on the status and timeline of the transition to the new forums here.
The Guiding Principles and New Rules document is now in effect.
This only happens on "boom boom boom" sections of games (happened with the Mirrors Edge demo). This doesn't happen with my XBOX360, so I'm guessing its based on the HDMI cable? Is there a sound setting I'm missing or should be adjusting?