A first and good step in order to sppedup things is the installation of the eaccelearator package.
You will find it here: http://sourceforge.net/projects/eaccelerator/
If TUTOS is still too slow. You should think about:
- putting apache and database to different machines
- allow more memory for php
- review the apache configuration
Beside this we are thinking about using the memcached packages in order to cache object information.