ureadahead exit with status 4 or 5

Hello, Im running Ubuntu 9.10 on 2 laptops, Lenovo T61 and Acer Extensa 5220. On both of them when the system boots, init drops an error like:

init: ureadahead exit with status 4 or
init: ureadahead exit with status 5

Is this a problem? because when I run from the terminal ureadahead -v, seems to work fine:

[robert@build:~]$ sudo ureadahead -v
/var/lib/ureadahead/pack: created Thu, 03 Dec 2009 08:51:14 +0000 for hdd 8:10
1 inode groups, 256 files, 250 blocks (12736 kB)
Read pack: 0.030s
Preload ext2fs inodes: 0.024s
Open files: 0.067s
Readahead: 0.000s

Please let me know