The aic7xxx driver (driving the adaptec 2940) have been updated a lot lately. So make sure you run a recent kernel, 2.0.36 or even better 2.2.2 2.0.34 is buggy, some earlier kernels work but don't take advantage of 2940 features. 2.2.2 (and possibly 2.0.36) will use tagged queuing, which may improve disk performance substantially under heavy load. Particularly for machines with several drives. Helge Hafting