Several questions from going through the install process outlined in the wiki. First, kudos for wonderfully clear instructions. Now onto the gritty:
1. Allowing the apache user to log in isn't something I'd choose to do, esp simply to allow the startup script to su to apache. There must be a better way, but it's way to late (or early) for me to think of it right now.
2. The default apache config places the wiki at the root level of the web pages. It would be nice to also provide a config that allowed the wiki to be a a subfolder, such as /wiki.
Along those lines, the comments in the config files about the apache ServerName having to match the DEKI_SERVERNAME are straightforward, but more information about why that's required and what that is actually used for would be great.