Trac is an enhanced wiki and issue tracking system for software development projects.
Looks good and i read the Requirements for Trac.
To install Trac, the following software packages must be installed:

• Python, version >= 2.4 and < 3.0 (note that we dropped the support for Python 2.3 in this release)

• setuptools, version >= 0.6

• Genshi, version >= 0.6

Ok. I updated my Shared Hosting account and i have now Python. Now a problem is coming. I can not install with easy_install.

Permission denied: '/usr/lib/python2.5/site-packages/test-easy-install-3007.write-test'

Ok. Is a shared account. We need a virtual environment.

I try http://pypi.python.org/pypi/virtualenv

Installing this and virtualenv works fine.
Installing Trac. Ok.
Standalone Server or Webserver:
Trac provides various options for connecting to a "real" web server: CGI, FastCGI, mod_wsgi and mod_python. For decent performance, it is recommended that you use either FastCGI or mod_wsgi.

On this point i stop the installation because Apache  need a compiled version from FastCGI, mod_wsgi or mod_python to include and to get fast.
With cgi alone is slow.

Another problem can be the Genshi Template System.

So i will spend my time in more development...