Just reinstalled the blogging engine WordPress 3.2.1, very easy. Keys things for me to remember:
1. File and directory permissions, use sudo.
chgrp -R www-data *
chown -R www-data *
chmod -R g+rw *
2. Make backup directory useable by www-data or apache owner, otherwise backups do not work very well!
3. Good plugin for me.
BackWPup
SexyBookmarks (by Shareaholic)
WordPress SEO