well, kernel 2.6.15-23-686 is definitely stable on edgy, but not on dapper. This is exactely the same .deb package so I start to believe that something else interact with the sata drive and create the slowing down. Maybe some power management software. I couldn't point this out so far.
-- ata_piix problem with Intel ICH7 chipset https://launchpad.net/bugs/53754 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs