[SLUG] Too much security!!

[Jin Ting Liew <jin@xxxxxxxxxxxxxxxxxxx>]

After reading an article on Linux security some time ago, I put some 
extra security measures on my server (the same one that has the problem 
with Redhad network update agent).  This  included protecting 
/etc/lilo.conf.  I am not sure what i did to it, but even as root or in 
single user mode i cannot do anything to this file but read it.  Even 
the redhat 7 upgrade had problems with this file and aborted (causing a 
huge headache, but this has been resolved).

I am certain that the drive is mounted read / write and that I have the 
appropriate permissions to write to the file.

If anyone knows what I have done it would be great if you could let me 
know = )

Jin