Ubuntu Apache2 Webmin — mixing * ports and non-* ports with a NameVirtualHost address is not supported, proceeding with undefined results-Collection of common programming errors

I’m a relative beginner with LAMP servers; I’ve played with Ubuntu on a few systems before but this unexpected problem has me stumped. I’m hoping someone can offer advice. I’ve been reading all day and nothing has worked so far from the other threads.

I have never installed Webmin before today. I installed Ubuntu Server 12.04LTS on a machine this morning and added Webmin, trying to be as generic and safe as possible with settings. Perhaps I’m not understanding something about Webmin working with Apache2 and it needs to be configured properly?

I’m using both default and default-ssl as they were installed with the system.

Anyway, I’m getting this when I run service restart apache2 and I can only get to the page using http:// not https:// and I can’t figure out what’s wrong.

[error] VirtualHost *:80 -- mixing * ports and non-* ports with a NameVirtualHost address is not supported, proceeding with undefined results