[CinCVS] Shaky and blurry still image zoom

Hi,

I'm creating a slideshow of still photos in Cinelerra, panning images side
to side and/or up and down results in good quality when the final product is
rendered. However, if I add a zoom (either in or out), the end result gets
somewhat wobbly or shaky looking. Is this a known issue, or can someone
suggest a fix or alternative method of zooming?

I found this post on Youtube that illustrates the same problem:
http://www.youtube.com/watch?v=otqGQVKoyMQ&feature=related

Also,
https://init.linpro.no/pipermail/skolelinux.no/cinelerra/2007-October/012136.htmldescribes
a similar problem, but I'm only seeing the issue when the Z axis
changes and I'm only concerned about the jitter that gets introduced when
zooming occurs.

Thanks,
Pat