I'm using custom authentication, works fine. When I try to do an insert from another part of my code I get a DomainOperationException error in my Silverlight App. I traced it back to a SQL Server (2k5) error which is Login Failed for XXX\XXX [Client: ].
The web server and db server are different machines, same domain. I've tried a domain user, sql user, etc. I've tried swapping app pool identities, etc. I've removed this from my web.config add name="DomainServiceModule" type="System.ServiceModel.DomainServices.Hosting.DomainServiceHttpModule, ...
..as well as several other things including screaming expletives loud enough to get me a new office. Any hints?