Today while setting up an ssl certificate i obtained for my new installation of activecollab i ran into this error:
VirtualHost *:80 -- mixing * ports and non-* ports with a NameVirtualHost address is not supported, proceeding with undefined results
To fix this add this to the beginning of your virtual host
NameVirtualHost *:443
Also change
<VirtualHost *>to
<VirtualHost *:443>
Then restart apache
Tags: ssl, virtual hosts