For what it's worth, I can verify that the bug is associated with the Intel integrated graphics controller (Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device). After reporting the bug, I scavenged a video card from a spare machine and installed it in the GX260 that was crashing/freezing. All has been well since then.
For what it's worth, I can verify that the bug is associated with the Intel integrated graphics controller (Intel Corporation 82845G/ GL[Brookdale- G]/GE Chipset Integrated Graphics Device). After reporting the bug, I scavenged a video card from a spare machine and installed it in the GX260 that was crashing/freezing. All has been well since then.