I built a new server about 10 days ago running CentOS 5.latest, and it's been presenting a message shortly after booting: irq 58: nobody cared (try booting with the "irqpoll" option) Call Trace: <IRQ> [<ffffffff800bb712>] __report_bad_irq+0x30/0x7d [<ffffffff800bb945>] note_interrupt+0x1e6/0x227 [<ffffffff800bae41>] __do_IRQ+0xbd/0x103 [<ffffffff8006ca11>] do_IRQ+0xe7/0xf5 [<ffffffff800a297e>] hrtimer_wakeup+0x1d/0x22 [<ffffffff8005d615>] ret_from_intr+0x0/0xa [<ffffffff8001240b>] __do_softirq+0x51/0x133 [<ffffffff8005e2fc>] call_softirq+0x1c/0x28 [<ffffffff8006cb8e>] do_softirq+0x2c/0x85 [<ffffffff8006b346>] default_idle+0x0/0x50 [<ffffffff8005dc8e>] apic_timer_interrupt+0x66/0x6c <EOI> [<ffffffff8006b36f>] default_idle+0x29/0x50 [<ffffffff8004923a>] cpu_idle+0x95/0xb8 [<ffffffff8007796f>] start_secondary+0x498/0x4a7 handlers: [<ffffffff801f74cf>] (usb_hcd_irq+0x0/0x55) Disabling IRQ #58 Looking at /proc/irq/58, it apepars to be USB related: /proc/irq/58/ehci_hcd:usb2 /proc/irq/58/smp_affinity cat /proc/irq/58/smp_affinity cat /proc/irq/58/smp_affinity 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000002 This is an Asus M4N75TD main board with 4GB non-ECC RAM, and AMD Phenom(tm) II X4 925 Processor. It has an ancient ATI Rage PCI graphics board, booting into init 3 as it's basically headless. I am definately not a hardware guy (hence the name of my company:-). Does anybody have any suggestions as to what may be causing this? This machine also powered off spontaneously yesterday evening after 10 days of uptime (the previous system in this 4U chassis was running SuSE Linux Enterprise 10, and died of a chipset fan failure after 1,390 days uptime :-). All major components are new, including the power supply. The only old component other than the 4U California PC chassis is the original HD with its partitions mounted read-only to get the original data. Any suggestions? Bill -- INTERNET: bill at celestial.com Bill Campbell; Celestial Software LLC URL: http://www.celestial.com/ PO Box 820; 6641 E. Mercer Way Voice: (206) 236-1676 Mercer Island, WA 98040-0820 Fax: (206) 232-9186 Skype: jwccsllc (206) 855-5792 An almost hysterical antagonism toward the gold standard is one issue which unites statists of all persuasions. They seem to sense that gold and economic freedom are inseparable. -- Alan Greenspan