Hi, I have a dual opteron CPU machine running FC3 and vmlinuz-2.6.11-1.14_FC3smp kernel. With the recent upgrade to new FC3 2.6.12 kernels, i encounter the following crash: Only the smp version crashes (vmlinuz-2.6.12-1.1372_FC3smp). The single processor kernel (vmlinuz-2.6.12-1.1372_FC3) boots in properly. HW: AMD Opteron(tm) Processor 246 Motherboard: Tyan 2446 RAM: 4Gb filesystem: XFS Crash: ... Creating root device umount /sys failed: 16 Mounting root filesystem mount: error 19 mounting xfs mount: error 2 mounting none switch to new root switchroot: mount failed: 22 umount /initrd /dev/ failed: 2 kernel panic - not syncing: Attempted to kill init! Call Trace: ..... bla-bla-bla.... ---------- Let me know if you have any clue, you found a similar situation, and know the solution! Cheers Gaspar