Complete contents of the only .conf file enabled on this host:
<VirtualHost *:80>
        DocumentRoot /var/www_alt
        <Directory />
                AllowOverride All
        </Directory>
        <Directory /var/www_alt>
                Options +Indexes +FollowSymLinks +MultiViews
                DirectoryIndex index.html
                AllowOverride All
                Order allow,deny
                allow from all
        </Directory>

        LogLevel debug
        ErrorLog /var/log/apache2/rebuild-test-error.log
        CustomLog /var/log/apache2/rebuild-test.log combined

</VirtualHost>




Hit logged in /var/log/apache2/rebuild-test.log
(MY IP ADDR HERE) - - [13/Jan/2012:12:04:08 -0600] "GET / HTTP/1.1" 404 500 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:9.0.1) Gecko/20100101 Firefox/9.0.1"



Error generated in /var/log/apache2/rebuild-test-error.log

[Fri Jan 13 12:04:08 2012] [error] [client (MY IP ADDR HERE)] Attempt to serve directory: /var/www_alt/
[Fri Jan 13 12:04:08 2012] [debug] mod_deflate.c(615): [client (MY IP ADDR HERE)] Zlib: Compressed 282 to 217 : URL /