On Tue, 2005-11-08 at 20:47 -0500, Graham Knap wrote: > Target 0 Negotiation Settings > User: 40.000MB/s transfers (20.000MHz, offset 127, 16bit) > Goal: 40.000MB/s transfers (20.000MHz, offset 8, 16bit) > Curr: 40.000MB/s transfers (20.000MHz, offset 8, 16bit) That's a bit unfortunate ... it shows that the domain validation code negotiated identical settings in the old kernel, so it doesn't look like that's the problem. My best guess would be that the bus is slightly marginal. The aic7xxx drivers are notoriously sensitive to bus problems. Could you try lowering the bus speed to 10MHz in the aic7xxx bios and see if that helps? Thanks, James - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html