I guess it's not a sane problem but a problem with the kernel module. Downgrade to an older kernel or change the scsi card will fix the problem. This problem was also reported for Gentoo with the 2.6.17 kernel.
-- atp870u SCSI module and Acer Flatbed Scanner: out of memory https://launchpad.net/bugs/69536 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs