I get a hda: interrupt lost ONLY when using the SMP kernel. when i use the regular kernel I don't have any problems. I am using Red Hat 9 kernel version: 2.4.20-20.9. It tries to recover itself and then finally locks up. I have gotten this same problem before on a different machine using mandrake. I have a P4 3.06ghz HT processor, 1gb ram, 60gb HDD. I only have Red Hat 9 installed on it. This is a brand new system. I would be so thankful for an explanation to this, whether its fixable or not.