[mythtv-users] is playing a DVD supposed to peg the CPU with a PVR-350?

[malcolm-mythtv]

I just got a DVD-Rom and added the DVD-Module.  I'm trying to play Finding 
Nemo and the picture is a little jerky, CPU is pegged at 100% usage (top 
reports X to be the biggest offender).  When I play live TV or a recording my 
CPU is at 97% idle.
BTW I'm using Xine as the player.  Is this behavior normal?  I thought the 
PVR-350 would decode the DVD and have little to no CPU usage?  This is on a 
2.4 Ghz Celeron.

Thanks
Malcolm