The provided /etc/httpd/conf.d/askbot.conf will not work with httpd 2.4 Here is an example on how to fix this: http://pkgs.fedoraproject.org/cgit/roundcubemail.git/commit/?id=1e1efeab93c6c75300c25b932222cc48be23a9d3
ASkbot is broken for F17 and F18. We should think about a solution, e.g. removing askbot until a current django release is supported, or provide a django13 compatibility package. But that's a solution, I won't recommend.
I am open to suggestions on how else to handle it. I will ping askbot upstream again on compatibility with the newer version of Django
https://admin.fedoraproject.org/updates/askbot-0.7.48-8.fc18