[Techtalk] Fedora Core 3 and SELinux

[percila orphan]

What is this SELinux and what is it suppose to do?
What does it really do? ( software rarely does what
its suppose to do anyway ).
Who wrote it and why does it have to be included
in Fedora at all? 
  Otherwise, I'm not sure why you're so upset.
I've got a copy of Fedora Core 2 but never used it.
Ran out of room on the hard drive.
I'm suppose to get Core 3 tomorrow and was intending
on installing it on the new hard drive, but now you got
me worried.  Please explain.