The time have risen from 20-25 sec in Meerkat to 35 sec in Natty. I do not know if it is
ureadahead but made a bugreport of it in launchpad. I tried Fedora shortly before installing Natty. They use
systemd instead of
upstart and didn't have this slow boot.
In a dmesg this jump shows up:
[ 3.087606] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null) [ 15.292831] <30>udev: starting version 167
How could it be that booting got so much worse? I also have a "black screen" much longer before Plymouth splash starts in Natty then in Meerkat. Could it be the famous kernel regression?