Fwd: my system do not boot HEEELP

[Donn]

> fsck 1.39 (29-May-2006)
> /dev/shm/root: clean,223025/2068576 files, 2120078/4132721
> blocks  (    )    OK

That seems to say all is okay with the filesystem. 

> /etc/rcS.d/S20checkroot.sh: 407: readlink: Permission denied
> /etc/rcS.d/S20checkroot.sh: 407: usplash_write: Permission denied
> /etc/rcS.d/S20checkroot.sh: 407: readlink: Permission denied

The problem here is that the permissions are fried. OR your root user it 
somehow messed-up.
All the permission denied stuff reminded me of when I broke my sudo. I wrote a 
howto on the forums which MIGHT help you: 
http://ubuntuforums.org/showthread.php?t=233502

If that does not help, then there is a way to boot into emergency command-line 
mode from GRUB by changing a flag, I am too rushed to dig it up now but 
search around for it. After you are in command-line (without starting all the 
services that are getting denied at the moment) you can start to diagnose the 
problem -- at least you could chmod those scripts that won't run.

Good luck, must dash.
/d