Hello everybody, I'm looking for some insights on reproductible lockups with this server so please bear the long description that follows: Installed the 4.0 Centos than yum updated it so it results a 4.2 Centos fully updated. During the instalation and update there were no cold boots. That's important because if (updated Centos or not) you cold boot the server it stucks at the "configuring hardware ... storage" step. It does not matter the kernel version but if i choose the SMP kernels it freezes just a little later on "configuring hardware ... audio" step.It freezes at the same spot without kernel panicking. I altered the rc.sysinit file so that at the configuring hardware step it does not load any modules. It passes (forcefully) the configuring hardware step but it freezes at the next "Configuring kernel parameters" step. There are no errors in the log as the k(logd) is not started at that point. For a change, i installed a FC2 and it's stable. However i want that Centos running! Please give me some advice. CM lspci output: 00:00.0 Host bridge: Intel Corp. Server Memory Controller Hub (rev 0c) 00:00.1 Class ff00: Intel Corp. Memory Controller Hub Error Reporting Register (rev 0c) 00:02.0 PCI bridge: Intel Corp. Memory Controller Hub PCI Express Port A0 (rev 0c) 00:03.0 PCI bridge: Intel Corp. Memory Controller Hub PCI Express Port A1 (rev 0c) 00:1c.0 PCI bridge: Intel Corp. 6300ESB 64-bit PCI-X Bridge (rev 02) 00:1d.0 USB Controller: Intel Corp. 6300ESB USB Universal Host Controller (rev 02) 00:1d.4 System peripheral: Intel Corp. 6300ESB Watchdog Timer (rev 02) 00:1d.5 PIC: Intel Corp. 6300ESB I/O Advanced Programmable Interrupt Controller (rev 02) 00:1d.7 USB Controller: Intel Corp. 6300ESB USB2 Enhanced Host Controller (rev 02) 00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB/EB/ER Hub interface to PCI Bridge (rev 0a) 00:1f.0 ISA bridge: Intel Corp. 6300ESB LPC Interface Controller (rev 02) 00:1f.2 IDE interface: Intel Corp. 6300ESB SATA Storage Controller (rev 02) 00:1f.3 SMBus: Intel Corp. 6300ESB SMBus Controller (rev 02) 04:03.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27) 04:04.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5705 Gigabit Ethernet (rev 03) cat /proc/mdstat Personalities : [raid1] md1 : active raid1 sdb2[1] sda2[0] 3068288 blocks [2/2] [UU] md2 : active raid1 sdb3[1] sda3[0] 240605440 blocks [2/2] [UU] md0 : active raid1 sdb1[1] sda1[0] 521984 blocks [2/2] [UU] unused devices: <none> cat /proc/interrupts CPU0 CPU1 0: 1847902 1878624 IO-APIC-edge timer 1: 795 727 IO-APIC-edge i8042 2: 0 0 XT-PIC cascade 8: 0 1 IO-APIC-edge rtc 9: 0 0 IO-APIC-level acpi 12: 0 58 IO-APIC-edge i8042 14: 6204 11391 IO-APIC-edge libata 15: 1 47 IO-APIC-edge ide1 169: 0 0 IO-APIC-level uhci_hcd 201: 0 0 IO-APIC-level ehci_hcd 209: 111408 88 IO-APIC-level eth0 NMI: 0 0 LOC: 3726666 3726522 ERR: 0 MIS: 0