Could be a hardware problem. Check the errata/bios updates for your board or system. I had a similar problem and it turned out to be a hardware BUG with an Intel server board. It is funny the way they describe the bug -- it is a manufacturer problem that affects only one of 5 (or 6, I do not remember) PCI slots. If you have a card in that slot, the system locks up under loads randomly. They solve it with a BIOS upgrade by degrading PCI clocks on all of the slots! The BIOS upgrade did solve my problem and the system uptime has been above 4 months now. Before the upgrade, the system crashed once each 24-48 hours. -- ---------------------------------------- Constantine Gavrilov Unix System Administrator and Programmer Xpert Integrated Systems 1 Shenkar St, Herzliya 46725, Israel Phone: (972-8)-952-2361 Fax: (972-9)-952-2366 ---------------------------------------- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/