I've noticed that if I apply dynamics and denoiser to the master audio channel of a sequence, and then nest that sequence within another sequence, when I export the movie (DV AVI) the sound has pops in it. The only way i've been able to get rid of the pops is to take the dynamics and denoiser off of the individual nested sequence and instead apply them to the master sequence (that contains the nested sequence). Bug? Any ideas why this would happen?
I've also had some weirdness like that such as bizarre volume changes in the master sequence that aren't in the nested sequence. Several "quirks" I've encountered were remedied by re-rendering or deleting the preview and media cache files then re-rendering.