I’m having the exact same problem. I’m assisting on a series of features, and 2 of our 4 workstations are starting to exhibit this problem. (All using the current updates of OS and FCP 5, 48khz timeline, DVCPRO HD 1080p picture).
The audio has been digitized correctly, there are no nested sequences, no effects, nothing other than a straight insert — and spontaneously, the audio recuts itself without any rhyme or reason. Basically, the clip reassigns itself a new remix of the original media, so people may repeat dialogue or spit out a series of unrelated syllables.
I have found that using render manager to delete the sequence’s render files will fix the problem, but of course I wish it wouldn’t happen in the first place. I wasn’t expecting this to fix anything, because the audio in question didn’t need rendering, but when you stumble on a solution….
Anybody have more information on this?
-karim