Hopefully you have not deleted the localhost entry in /etc/hosts, otherwise sendmail and some other applications will not work properly.
127.0.0.1 localhost.localdomain localhost
has to be there in every case
Well actually, originally I did, because I didn't have any use for this entry. However, I was quickly convinced this was not a wise decision following the errors I got.
Anyway, thanks for the tip.
Guus. -- A.J. Bonnema, Leiden The Netherlands, user #328198 (Linux Counter http://counter.li.org)