Comment 14 for bug 542334

Hi,

I had the exact same problem, upgraded from 8.04LTS to 10.04LTS and then got the ureadahead errors.
I resolved the problem by editing /boot/grub/menu.lst and changing my kernel to the one supplied with Lucid

root (hd0,0)
kernel /vmlinuz-2.6.32-22-generic root=/dev/md2 ro quiet splash
initrd /initrd.img-2.6.32-22-generic

Obviously you will need to adjust the above to your environment.

Regards,
Jason