If you are talking about the http://uppercut-justice.com/ site, that site is up for me.
Have you done a traceroute test on it to see what is happening with your connection? The fact that you cannot log onto the Panel, or certain other sites, but you can get here makes me think your ISP may be having DNS issues.
I'd investigate that before I contacted support, as I can see your site and the other DH sites you can't seem to reach.
You can always use the http://dreamhost.com/contact.cgi form as an alternate way to contact support if you need to.