I have an existing (and fully functional) 0.10.4 database that I'm
migrating to a new server running 0.10.5.  The setup of the old and
new server should be identical ... it isn't that complicated.  The new
server is Fedora 9 (the old server is Fedora 7).  The new server is
using httpd and subversion from the install DVD.  I installed trac
with yum (which also installed python-clearsilver).

The httpd server is run as apache.  Subversion is served through
apache and works fine (both from svn clients and web browsing the
files).  Trac is served through apache using mod_python.  Here's the
entry:

<Location /trac>
  SetHandler mod_python
  PythonInterpreter main_interpreter
  PythonHandler trac.web.modpython_frontend
  PythonOption TracEnvParentDir /var/www/trac
  PythonOption TracUriRoot /trac
</Location>

I was sure to set all the permissions in that /var/www/trac folder to
apache.  I also made sure the SELinux tags were set appropriately.
When I browse to the correct page, I get this:

Internal Server Error

500 Internal Server Error (The user username requires read _and_ write
permission to the database file /var/www/trac/admin/db/trac.db and the
directory it is located in.)

Where 'username' is the name of the user that is logged into the
server and started apache.  Yes, that is strange ... it isn't apache
but the user that logged into the server, before switching to root, to
start apache.

If I log in as root to start apache the username is root.  Strangely,
I get the same error, even though root should have permission to
everything.  However, just to test I did what it asked and made root
the owner of all the files and gave everyone write permission and got
the same error, so I think it is a misleading error and something else
is going wrong.

Checking the apache logs there is nothing that is interesting from
what I can tell, but I'd be happy to share.

I am completely stumped.  I first thought it was because I was trying
to use a migrated database so I tried to upgrade the database, and it
said:

Database is up to date, no upgrade necessary.

I then thought it was just the environment in some other way, so I
created a new environment with initenv and got the same exact error.
I then thought it could be a problem with accessing the database
(since I didn't install sqlite) but in doing a trac-admin list I was
able to get the right contents out.

So ... I have no idea what to do.  I've been using trac for years and
this is the first time I've had a serious problem.  My last resort, if
I get no help, is to go back to using 0.10.4 (assuming that is the
problem), but I'd like to avoid doing that.

I can't upgrade to 0.11 at the moment, so that isn't an option either.

Thanks, any advice is helpful.
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