Yesterday logcheck sent me a message about lost interrupts "kernel: hda: lost interrupt" yet all seemed to be working well Google threw up many reports of this error, but no consistent explanation or context for it occurring. On balance, I would say that software, perhaps kernel, errors, or configuration issues, seemed to outnumber hardware ones in the proffered explanations. But I am none the wiser. My machine then locked up when experimenting with some unsupported software in crossover. On rebooting it went into a loop involving lost interrupts and I reset the machine and went into Windows to see if that was working - which it was with no problems (I realise that that's not necessarily much of a guide, but it did rule out catastrophic hardware problems). On rebooting linux, the boot process proceeded normally and the system seems to be fine at the moment, though I do have "submountd: resmgr: server response code 200" messages and I remember that resmgr was upgraded the previous night (I have no idea whether there could be a connection between this and the lost interrupts). I'd appreciate some guidance on how to deal with this. The system, which has operated fine for the last 6 months, is MSI K8T Master dual opteron, with up-to-date bios, 4GB memory, one maxtor drive on first IDE, DVD on second IDE, and a second Maxtor on a promise PCI card, 2.6.5-7.111-smp, 9.1 Prof. - Richard. -- Richard Kimber http://www.psr.keele.ac.uk/