Random noise bursts in bounces

I posted once before on this topic... but it seems to me that the problem is getting worse. When I bounce a project to disk, I almost always end up with random bursts of white noise which occur once or twice, lasting anywhere from a fraction of a second to several seconds. This means I have to be very very careful to open the bounced files and check if they are OK, before trusting that I can play them without scaring people or potentially damaging their ears (I am doing sound design for a theatre production). I have never had an audio app behave like this. I have turned on/off normalization, dithering, tried different sample rates, etc, and I continue to get these noise bursts. If anyone has similar experiences, or suggestions for a solution, I'd like to hear from you! Although I like Logic very much, I can't use it if this continues.

Hi Matt,
...this could be a number of things. A defective plugin, corrupted system sound software, coreaudio drivers screwed up, etc etc.
So, if you bounce the same project twice, is there always noise somewhere? Or is it only sporadically? And does this noise completely substitute the music where it occurs?
Also: have you got anything (app) running in the background while bouncing?
First approach: try bouncing the project 'plugless'. Make a copy of the project, disable all plugs (including SI's - export and reimport them as audio first) and see if the problem persists. If it goes away, one of the plugs may well be the problem. I would most suspect an SI, but an effect could also be the cause.
If it persists, the plugs are not the problem.
If you already haven't, also follow these tips where they apply:
http://support.apple.com/kb/HT2375?viewlocale=en_US
If all this has no effect, a Logic (app only) reinstall is next, followed by a Leopard (archive and) reinstall...
regards and good luck, Erik.

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