More random stabs of white noise

Dear Logic users,
This is a continuation of the archived thread at http://discussions.apple.com/thread.jspa?messageID=6286440&#6286440 After recording a band intensively for over a week, I have experienced the "savage stabs of white noise" described in the thread, but only on rare occasions. I have some extra info though, as there appears to be two conditions of these noise-fests:
1) A short, intense white noise that occurs seemingly random (although in my experience, it has always been towards the end of a recording) during playback (note: not during recording, everything sounds fine then). This is clearly written to file, because if you zoom in closely, you can see a square-like waveform. This portion of the audio can be removed, and the rest plays back fine.
2) A whole take plays back nothing but ear-deafening white noise. The waveforms look normal. Upon muting the track, it is confirmed that it is only this particular take that is affected. The only thing to do is to delete the take, and record again.
Clearly, this behaviour is unacceptable. As others have commented, this is a major mood-killer, and something that is actually quite scary. Since it happens so rarely, it is not easy to troubleshoot. I'm writing this with the hope that someone has found a remedy. Since it happened to people with different interfaces (I own a RME FireFace 400 myself), this appears to be an Apple/Core Audio/Logic issue. Any input will be greatly appreciated.

I don't have any new light to shed, other than to confirm I have had this happen enough for it to be a REAL concern.
It doesn't happen a lot, but when it does, it can be a huge problem. When I'm working alone, it has been merely an annoyance, but 1 month ago it happened with 6 singers out in the studio. Blistering levels of white noise pumping through all of their headphones, as we listened back to a phrase they just punched in. Nice...
A Logic user friend and colleague seems to think there is something perhaps in the way we're hitting record, repeat, delete... some combination of key commands that causes this. I suppose that's indeed a possibility, although neither of us has been able to pinpoint what that is, exactly.
For the record, even though I use my Lavry 4496's as my inputs, I've been getting them to Logic via the SPIDF input on my RME FF800. I know you said it's a problem that is occurring with various interfaces... just thought I'd document that mine is also an RME... just in case that's a contributing factor here.
I really hope Apple gets to the root of this. It is probably the one single thing that can derail any hopes they have of Logic surviving in a pro audio environment.

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