We have similar problems with our dual Pentium Dell Precision 220. If we only had a Dell engineer in this mailing list---- -dave --- Robert Olson wrote: My speculation on this based on some experiments I did earlier (also based on the positive effects that playing with PCI burst-size settings in the BIOS) is that there are issues with bus contention or allocation of resources, either within the PCI bus itself or in the management of the chipset memory/PCI/CPU transport resources. If anyone is deeply familiar with how these architectures work I'd love to have a chat (anyone doing architecture work at one of your universities??) --bob --- end of quote ---