The filesystem corruption I was experiencing with the stock Jaunty kernel (2.6.28-11-server) on an x86-64 system was down to the nVidia CK804 PCIe chipset corrupting data on PCIe read completions from the SATA controller's DMA engine. I have observed this with a PCIe bus analyser.
On a system without the CK804 (or MCP55 or related) chipset, I find the stock Jaunty kernel solid.
The filesystem corruption I was experiencing with the stock Jaunty kernel (2.6.28-11-server) on an x86-64 system was down to the nVidia CK804 PCIe chipset corrupting data on PCIe read completions from the SATA controller's DMA engine. I have observed this with a PCIe bus analyser.
On a system without the CK804 (or MCP55 or related) chipset, I find the stock Jaunty kernel solid.