Great Success for each domain

I assume the "mydomain.com/index.htm" is the main servers domain name and not one of the accounts domain names?. Normally if apache bitches about not finding the file in the htdocs folder its because you are looking at the servers domain name.

You need to be sure of which domains you are looking at , that is the servers domain or the individual account domains AND which ip addresses are assigned to them.

You might be mixing things up and setting the account domains to the main server ip or something else where your server ip and shared ip is mixed up or both are the same.

 

Ok, you probably made ip address changes and were caching old dns info for a while.