Is anonymous access to listdata.svc possible? I'm trying to just simply get list items and display them using json but I either get asked to login or a 401 unauthorized. It's a claims based site with NTLM authentication and anonymous access enabled. Anonymous access to the list itself works just fine.
IIRC listdata.svc does not allow anonymous access even if anonymous access is enabled for the site.
Could you try using the Client Object Model instead of going throught the services directly?