This is a strange one i've not had before...

Carrara's been acting up, simply exiting to desktop without warning while in a mid-render. Its not even bothering with the Memory Allocation Error messages anymore. I did a fresh reboot, emptied the DazTmp folder after every crash, C6's Disk Spool set at 200mb,  exited my Antivirus & firewall apps, and any other process that wasn't required, in result Windows & system Memory usage at 268mb...

Now, this particular scene, I was able by fluke - get a 1680x1050 render but it was in avi format frame 1 / 96... but after that, I could nolonger get anything more than 840x525 without crashing. Believe me, I've had way more populated & resource intensive scenes done before at full resolution...

The scene setup in the assembly room: i440.photobucket.com/albums/qq129/TerrasJadeonar/Glitches%20and%20Issues/Glitchscenesetup.jpg

The Render artifacts / Progress Statistics Tab:
Notice the 2 render tiles (@ 128) where i'm getting some digital  garbage in those  tiles. Total surface area size 1.71gb  i440.photobucket.com/albums/qq129/TerrasJadeonar/Glitches%20and%20Issues/Glitchtab3.jpg

Looks like i goofed up on the other screenshot, overwrote it... Was going to paste one with system temps.  

AA Good
Accuracy 2 Pixels
Shadow Accuracy 2 pixels

Global Illumination:
Sky 100%
Indirect Lighting 100%
Interpolation 20%
Photons 5000
Photon accuracy 10%
Lighting quality: fast
Accuracy 16px
Tiles: 128

Basic System Setup:
Core2Quad Q6600
Thermalrite Ultra120 Extreme Heatsink / 120mm Panaflow fan
2gb Ram, XP Pro
Coolermaster 620HX PSU, CM Stacker 800 case
Carrara 6.2.1

CPU temps - range for all 4 cores via CPUID Hardware Monitor
Min 39C  (102F),  Current 40C (103F) - 42C (107F),  Max 54C (129F)

Final render: "Maximum Ninja: 820x525, indirect light 140%, Tile size 32: www.renderosity.com/mod/gallery/index.php