Viewer Graphical Bug

Someone emailed me this image asking if I had seen anything like it before. I said not exactly; but it does look like something that can occur when running FCS on an underpowered video card. I have no real idea but the emailer said it cleared up when they hit the spacebar to resume playback in the Viewer.

Audio Playback Patch Causing FireWire Audio Noise?

Some people are reporting a high pitched noise after the audio fix update.

So the recent Mac Pro audio update 1.0 (applied on 10.6.2) has reduced my CPU temperature with audio playback (Presonus Firebox Firewire audio interface) and that is great. Also haven't had any machine crashes (grey screens) recently which is also great.
The problem is that when the Firebox is plugged into the firewire port of the Mac Pro there is a constant high pitched whistle of slightly oscillating frequency. If I unplug the Firebox the whistle goes away in a few seconds.

After prolonged use in a quiet room (the kind of room you need for audio recording / mixing work!) the noise is enough to drive me crazy.

You can read the thread here.