Apache

configuration error: couldn't check user. check your authn provider! with Subversion:

This error can occur if you have digest authentication enabled to authenticate against Subversion, but you haven't enabled the actual digest authentication mod, like so:

LoadModule auth_digest_module /usr/lib/apache2/modules/mod_auth_digest.so

Awstats

If your Apache log config (in /etc/apache2/apache.conf) defines a log format like this:

LogFormat "%v:%p %h %l %u %t "%r" %>s %O "%{Referer}i" "%{User-Agent}i"" vhost_combined

Then you need to modify the awstats.domain.conf LogFormat and HostAliases:

LogFile="/var/log/apache2/other_vhosts_access.log"
LogFormat="%virtualname %host %other %logname %time1 %methodurl %code %bytesd %refererquote %uaquot"
HostAliases="localhost 127.0.0.1 jevon.org:80"