Seems a little dumb, and I’m not sure how other distributions deal with it, but if you install Cacti from RPM on CentOS, and then browse to your /cacti/ directory via HTTP, you’ll find that it dies with a segmentation fault. You know this is you if every other website on your host works, but everytime you go to your /cacti/ URL, your browser reports that the site is totally unavailable (as if apache weren’t even running).
This is a companion discussion topic for the original entry at https://www.funkypenguin.co.nz/note/workaround-for-the-cacti-segmentation-fault-on-centos5/