hmm - we have had record number of installs these past couple of days, however, there is no indication that the repos are not working when you click in this url:
http://f12.amahi.org/
you should see a "Fedora Test Page" for apache. if you add an i386/ after the url (we prefer not to link to it to prevent spiders from slurping bandwidth unnecessarily), you should see some rpms there.
do you see them?
if you do, and you cannot still access it, it could be that fedora does not support your ethernet during install time?
it's not too common, but in that case, you can try
installing fedora first and then add amahi on top.