frequent - client denied by server configuration error

my apache logs shows repeated errors like the one below:

[error] [client 108.178.53.226] client denied by server configuration: /var/www/example.tld/web/members.

The related vhost file looks like:

Code:

...
<Directory /var/www/domain.tld/web>
				Options FollowSymLinks
				AllowOverride All
				Order allow,deny
				Allow from all
		</Directory>
		<Directory /var/www/clients/client40/web66/web>
				Options FollowSymLinks
				AllowOverride All
				Order allow,deny
				Allow from all
		</Directory>
...

Please note that I can access the directory domain.tld/members in the browser without any problem. So why these errors are there I can't make it out.

Thanks.

OS - Ubuntu - 12.04 64bit, Server - Apache 2.2, Php 5.3, ispconfig - 3.0.5.3