I want to be using the system default Apache available through Web Sharing, not MAMP.

Other questions/answers related to similar problems have not helped.

Initially, I had MAMP running, but I stopped it because I thought it might be causing a conflict, that didn't work.

I also had an issue with apachectl related to the 10.6.5 update, which I fixed. Apachectl reports no syntax errors and seems to be working fine to start|stop|restart apache.

Here are the errors that repeat.

12/29/10 11:53:28 AM Firewall[63] httpd is listening from ::ffff:0.0.0.0:80 proto=6
12/29/10 11:53:29 AM com.apple.launchd[1] (org.apache.httpd[8618]) Exited with exit code: 1
12/29/10 11:53:29 AM com.apple.launchd[1] (org.apache.httpd) Throttling respawn: Will start in 10 seconds

This is not my area of expertise, so I hope that's enough info to go by.