Strangely I’ve had some people reporting issues with being prompted for a username and password when accessing files on svn.blog.oneiroi.co.uk

it would appear in mod_dav_svn-1.4.2-4.el5_3.1 that this directive: AuthzSVNNoAuthWhenAnonymousAllowed

now defaults to OFF, well that was a p.i.t.a trying to track down, having never seen that directive in ANY of the documentation …

Anyway pass this on to other facing the same issue.