Hello, I should have known that the culprit would be a dreadful TLS+ctypes+Drepper-optimization combination... Just a missing additional __ctypes_init() call... Now building a fixed 2.17-3+hurd.1 package, and waiting for both rdfind (thanks Svante for handling that) and eglibc upload to be able to finish the pending upgrade to eglibc 2.17 and hurd packages. Samuel