Comment 26 for bug 668671

(In reply to comment #14)
> I'm unable to reproduce it locally, and the backtraces don't really tell me
> much.
>
> Does everyone who experience this use pulseaudio? I know pulseaudio does some
> trickery with the root X window, maybe that's confusing something?

Pulseaudio libs are installed here but not used. Pulseaudio for me creates an unwanted latency / delay in apps, so it's disabled.