Thanks for all the help. I finally figured out what it was yesterday. There was a permissioning error on /bin/su
I had to chmod u+s /bin/su and it now works.
Originally Posted by sdexp
Also, I'm not used to seeing the hyphen after "su" so maybe it would be better (rather than "su - ")
I am still new to Linux, but I am pretty sure adding the - after su loads the user's (who you are becoming) environment.