Comment 2 for bug 734398

I can confirm with Ubuntu 11.10 and Flash player 11 downloaded from Adobe's website. I don't know whether it is a problem with Adobe's plugin or whether the problem is on the Ubuntu side.

The problem can be observed very easily in this Flash game:
http://www.adamatomic.com/canabalt

Just wait until the character jumps through the glass (which happens after a couple of seconds of playing) and notice how the sound of the breaking glass is delayed by about 1 second. Makes that specific flash game unplayable.