403 Forbidden error

I have a question about apache webserver configuration.
I am using Apache/2.2.0 on Fedora Core 5.

I have configured httpd.conf like this:
DocumentRoot "/www"

<Directory "/www">
Options Indexes FollowSymLinks
AllowOverride None
Order allow,deny
Allow from all
</Directory>

In /www I create a directory wiki and I can access this with no
problem.

-----
I would like to keep the directory wiki in other place and link to it
in my /www.

If I put wiki in / and link /www/wiki1 -> /wiki, everything works fine.
The permissions on /wiki are drwxr-xr-x.

-----
If I put wiki in /home and link /www/wiki2 -> /home/wiki, I get the
error:

Forbidden
You don't have permission to access /wiki2/ on this server.

The persmissions are:
on /home drwxr-xr-x
on /home/wiki drwxr-xr-x

-----
If I put wiki in /home/someuser and link /www/wiki3 ->
/home/someuser/wiki, I get the error

Forbidden
You don't have permission to access /wiki3/ on this server.
Additionally, a 403 Forbidden error was encountered while trying to use
an ErrorDocument to handle the request.

The permissions are:
on /home drwxr-xr-x
on /home/someuser drwxr-xr-x
on /home/someuser/wiki drwxr-xr-x

Can someone explain me what is happening?
How can I fix this?

Thanks!