Stuttering Audio from 10.6.8 Update all Outputs

Hi,
I updated to 10.6.8 and now have stuttering audio using either digital output, headphone output and from the internal speakers so I think something there is a bug.
I tried rolling back 'AppleHDA.kext' using the 'MacOSXUpdCombo10.6.7.dmg' and Pacifist but that didn't help the situation.
Anyone else having similar issues/have an idea for a fix? I don't have a time machine backup with with 10.6.7 unfortunately...

I have a early 2008 macbookpro 2.8 duel with silver keys.
I purchaed the 10.6 disk from the apple store. I've had the machine for years and purchased it refurbished from apple.
I did the erase and install and migrated everything over from external drive, then did update to 10.6.8 and the usb ports still would stop working after a few hours.. Then I read on another apple community forus to reset pram, and pull out the power cable, take out the battery and hold power key for 5 seconds, then restart. that seemed to fix usb issue so far..
But overall my computer seems to be running slower then when using just 10.5.8 and it did not wake from sleep once and I had to force power off and restart.. But maybe its just getting used to 10.6.8. we will see..
Also, on another note, my battery is totally dead, and I can only run computer with power cable.. Will this affect things? it never did with 10.5.8..
Oh, on my erase and install, I just did the simplest version and did not do the full erase to zero using he advanced security measures.. I just did the one where it writes on top of everything..

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Stuttering Audio from 10.6.8 Update all Outputs

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