LazyWeb: What is that . doing there?

So tonight I was sitting there tonight getting ready to setup cobbler for another installation source, and I noticed something very odd.

# ls -l /root<br /> total 88<br /> -rw-------. 1 root root  1176 2008-11-23 17:22 anaconda-ks.cfg<br /> drwxr-xr-x. 2 root root  4096 2008-12-14 18:37 bin

See the . ? Where you ask?  Look closer!

drwxr-xr-x. <– look, there it is!!  At first, I thought it was just one file, but then I noticed it other places, then I looked further, and it seems to be everywhere.

What is up with that? Where does this come from?  What is it for?  LazyWeb, can you help me?