Play-back jerky after a while

[ferguscan]

Hi,

I have a 2GHz AMD Athlon, and an Nvidia GeForce FX-5200.  I run LinuxMCE using UI2 (medium).

When I start LinuxMCE, it works fine.  Play-back is smooth.  Xine uses around 10% of my CPU.  After I watch a few movies or TV episodes, however, playback becomes noticeably jerky, at which point Xine is using > 30% of my CPU.  The same problem presents itself for MPEG-2 and MPEG-4.

Anyone know why this is happening?  Would it be solved if I moved to UI1, or bought a new Nvidia card, and moved to alpha-blended UI2?

Thanks,

Stuart