Hi, I have a Dell Poweredge 6800, with 4 Intel 64 bit 7020-chipset dual-core CPU's. They also support hyperthreading. I can't get the 2.6.9-22.0.2 SMP x86 kernel to boot. The UP kernel boots fine. The x86_64 SMP kernel boots fine, but apparently only supports 8 cpu's - unfortunately hyperthreading *has to* work, for a research project. I was under the impression that the x86 kernel *should* work on a 64-bit machine. Is this not the case? Any info or experiences would be appreciated. cheers, deb -- d e b b i e m a z u r e k [log in to unmask] system admin . department of computer science . university of calgary