I have the following setup;

Main GUI:
Windows XP (32-bit) (Duron 1200) running RealSoft v6.1 SP1 (06.01.24)

Render "farm":
CentOS 5 (Dual-core Opteron 165 ?? GHz) realsoft3d-6.1.24-5 (64-bit)
CentOS 5 (Dual-core AMD Athlon 64 X2 4800+) realsoft3d-6.1.24-5 (64-bit)
Windows x64 (Dual-core AMD Athlon 64 X2 3800+) RealSoft V6.1 SP1 (64-bit)
CentOS 4.3 (Dual-Socketed Opteron 246, 1.8 GHz) realsoft3d-6.1.24-5 (64bit)

I'll soon be adding a Pentium D 930 into the mix, but that one's running 
NetBSD right now and I'm having trouble getting RealSoft running on it 
under Linux emulation.

I have an enormous 3600-frame animation I rendered over the last five days. 
Imagine my surprise when I found that a half dozen or so of those frame 
elicit what appear to be render errors.

For more information, see here:

http://www.abyss.ca/render/render_errors.html

In the first set of images, there's a long slice of a back cube, mapped 
with the standard green mottled marble texture included with realsoft, 
simply missing. It's not obvious from the first image, but if you look at 
the first, and then at the next one or two, you'll see what I'm talking 
about.

Next, in one single frame, part of the floor is simply missing. There are 
huge swaths of it where you can see the camera backdrop behind it.

When I jack up the quality to high-quality rendering, different portions 
are missing..

When I use the local 32-bit Duron to render the borders of the missing 
chunks using a renderbox, the visible and missing parts switch places. 
(The visible parts disappear so you can see the camera backdrop, and the 
invisible parts are properly rendered.)

I'm continuing to investigate, and I've already annoyed RealSoft about 
it, but has anyone seen this before? Have any hints? Suggestions?

Thank you in advance!

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