I am using WHMCS to create new domains in Plesk 10. When the domain is created via a php page form submission, the resulting page returns a "Server cannot be found" error. This seems to be because websrvmng is not gracefully restarting apache. Apache goes down for a brief amount of time and the response page for the domain creation script does not show up because Apache is down. This was not an issue in Plesk 8.6. As a workaround I have disabled websrvmng because the domain creation script still modifies the Apache .conf files correctly, only Apache needs to be restarted manually. For me this is a better scenario than having my new clients be presented with a "server cannot be found" error.