With the goal to install owncloud (version 6.0.3-0) on my ubuntu server (14.04), I followed this guideline: http://doc.owncloud.org/server/6.0/admin_manual/installation/installation_source.html
After having this completed, the /var/www/owncloud folder exists with the following content:
3rdparty core index.html occ robots.txt themes apps cron.php index.php ocs search version.php config data l10n public.php settings console.php db_structure.xml lib remote.php status.php
Visiting
http://localhost
results in a site like this: https://assets.digitalocean.com/articles/lamp_1404/default_apache.png indicating, that the apache-server works.
Visiting
http://localhost/owncloud
leads to server error 404: "Not Found".
Meanwhile, I tried the installation (owncloud 6.0.3-0) on my laptop (Ubuntu 13.10) to compare results. Skipping the above guidelines, just installing owncloud using the package-manager works out of the box, while the content of /var/www/owncloud results only in config data
Since it works on my laptop, I have the suspect, that I screwed up some configuration on my ubuntu server. Even so, reinstalling apache2 (including purge) did not help.
Do you have any ideas, where to start over?