Okay. Here are the specific symptoms (file attached):
Often, nothing noticed until I start a music player (any will do). Ubuntu 
bongos play normally when I log in. I start a music player, choose a song, 
press "play," and often, a song will start to play (sometimes: silence- about 
20% of the time). If the volume is too high or low, I slide the slider on 
either the player or the master volume and "every other detent" the music will 
loop- about fifteen to twenty times per second, until I move the volume to the 
NEXT detent and either the song goes silent or returns to normal playing- but 
at a higher or lower volume.

So attached is the troubleshooting file.

I cannot get this behavior without pulseaudio running. I also couldn't
get this behavior in Debian, normal (read: ancient) install.

If there's anything to add- I can't get this laptop (IBM A20m) to correctly 
play with Speedstep governors. ACPI (and acpi-ibm) are working very well: 
lmsensors, fine- but there's no cpu speed indicated in the /sys filesystem. 
Not that it means anything, of course, but I'm just tryin' to be complete with 
systemic problems which might affect pulseaudio.

(compled with -ffast-math? )


** Attachment added: "pulseaudio stutter log"
   http://launchpadlibrarian.net/36453960/pulseverbose.log

-- 
pulseaudio crackle/distortion with cs46xx on latest update
https://bugs.launchpad.net/bugs/428619
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