Here's an update. With an Ubuntu Live CD (using 2.6.24) I could mount the raid sets and recover just some data without issues. I rebuild the system using Ubuntu with a 2.6.24 kernel. All issues with the disk performance/corruption are gone now. The system is racing at full speed again with this kernel. For me this confirms there's something seriously wrong in the 2.6.26 kernel. I am guessing the problems I've had are all related (with the promise controller and with the new Sil3124 controller) because I've had nothing but trouble with disk access ever since I got to the 2.6.26 kernel.
Fix or workaround? Install a 2.6.24 kernel rather then 2.6.26. Too bad that kernel version is no longer in the Debian repositories. Regards, Rudi -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org