I have a new Gazelle professional, running Ubuntu 12.04, i7 processor, standard system graphics.

Often, when I stream a video online (youtube), the video plays back at ~2-3 times normal speed, with the audio obviously an unintelligible gibber. It doesn't do this all the time, but I cannot locate the setting/issue which causes it. Sometimes restarting (but never simply logging out) will correct the issue for awhile, but it comes back quickly.

Oh, I'm using Chrome as the browser.

Thoughts?

Dave