[mythtv-users] Old Recordings stutter after upgrade to 0.21

[Roger McClurg]

I upgraded Mythtv 0.20.2 running on Gentoo to 0.21 running on Ubuntu. 
After the upgrade new recordings playback beautifully, but recordings 
made with 0.20.2 stutter. That is to say the playback stops for about 2 
seconds after every 5 seconds of playback

The hardware is a VIA EPIA M-10000 vith a PVR-350.

Does anyone have an idea what is causing this?