Bluetooth A2DP audio occasionally drops out for a second on custom ROMs

When I'm playing audio over the A2DP data path to my car, the audio randomly will drop for half a second, then gradually comes back to full volume over perhaps a second of time. Speaking like a programmer, it's almost like something mutes the audio and then slides the volume up in a loop or something. This problem did not occur on Bombaridier and the older Synergy Kernel, however it is happening with the newer kernel on Juggernaut v5, Paradox and SlickMOD, leading me to believe something in the kernel or newer system binaries might be causing it. This behavior happens in Pandora, Amazon MP3 and also the stock Music app. Thinking that maybe a stray notification was the problem, I've tried disabling notifications in all of the apps I know of that notify, I've also tried switching the phone into vibrate and finally into full-silent, but it does not seem to affect the behavior. I have found no likely cause. I wish I was able to log alsa changes; maybe a script running constantly with something like:

while (true)
do cat /proc/alsa/some_alsa_status_entry >> /tmp/alsalog
sleep 1
done

Does anyone else have any ideas as to what this might be? It's really annoying!