svn and webdav work. For trac, viewing works, but trac login isn't possible. The netlabs.org newsgroups on news.gmane.org can't display a posting.
I remember that Adrian wrote that the blog and the old netlabs.org web pages still don't work. They work now.
Apparently the trac login problem wasn't expected, but ldap login generally works.
That means that it's possible to check changes in via svn and to upload files via webdav.