By DreamHost supplied, I'm talking about the one you can now set up through the control panel - is that what you've used? I'd like to use that as it appears to support http access and so could host a trac front end.
Anyhow, yeah, I've created a repository. When you add the repository in the panel it's quite unclear if it is going to create the repo or not, but when I log on in ssh I can't see it. From the text on the panel I get the impression it would create a repository. Maybe it's created, but under a different user name.
Now when I try to do a svnadmin load I also get the 'no such revision 0' message. Weird.
I wonder if all the servers are enabled. This is on karnov, fwiw.