Multi-domain main site URL resolving to domain_current_site

I've just installed the Multi-Domains plugin and now my main site URL is resolving to domain_current_site.

I am running WordPress 3.0.1
I am using domain mapping so I installed the version of sunrise.php that supports domain mapping.
I tried adding a domain (, parked the domain on, and created an A record for * I was not able to get it to work.

At this point I discovered the primary domain was no longer working. All subdomains still work, and so do all domain mappings to subdomains. I am also able to access the admin control panel.

I removed from and uninstalled the Multi-Domain plugin. I reinstated the previous sunrise.php for the domain mapping pluging. But the primary domain still reroutes to domain_current_site.

Any ideas of where I should look to get the primary domain pointing to the site again?