I have a problem - sometimes flash video and audio is fast forwarded 2x or 3x.

It's happening randomly and only reboot helps to solve it.

Any ideas?
Thank you.

P.S. ubuntu 12.04, chrome 20.0.1132.47

P.P.S. I've seen some threads with similar issue, but there video is fast forwarded and no audio, so those fixes doesn't help me.