diff -up cups-1.4.2/cups/http.c.gnutls-gcrypt-threads cups-1.4.2/cups/http.c
--- cups-1.4.2/cups/http.c.gnutls-gcrypt-threads	2009-12-21 16:50:58.931552118 +0000
+++ cups-1.4.2/cups/http.c	2009-12-21 16:51:15.047552357 +0000
@@ -1161,6 +1161,9 @@ httpHead(http_t     *http,		/* I - Conne
   return (http_send(http, HTTP_HEAD, uri));
 }
 
+#ifdef HAVE_GNUTLS
+GCRY_THREAD_OPTION_PTHREAD_IMPL;
+#endif
 
 /*
  * 'httpInitialize()' - Initialize the HTTP interface library and set the
@@ -1205,6 +1208,7 @@ httpInitialize(void)
 #endif /* WIN32 */
 
 #ifdef HAVE_GNUTLS
+  gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
   gnutls_global_init();
 #endif /* HAVE_GNUTLS */
 
diff -up cups-1.4.2/cups/http-private.h.gnutls-gcrypt-threads cups-1.4.2/cups/http-private.h
--- cups-1.4.2/cups/http-private.h.gnutls-gcrypt-threads	2009-04-07 16:48:14.000000000 +0100
+++ cups-1.4.2/cups/http-private.h	2009-12-21 16:51:15.049552624 +0000
@@ -98,6 +98,8 @@ extern BIO_METHOD *_httpBIOMethods(void)
  * The GNU TLS library is more of a "bare metal" SSL/TLS library...
  */
 #    include <gnutls/gnutls.h>
+#    include <gcrypt.h>
+#    include <pthread.h>
 
 typedef struct
 {
diff -up cups-1.4.2/scheduler/server.c.gnutls-gcrypt-threads cups-1.4.2/scheduler/server.c
--- cups-1.4.2/scheduler/server.c.gnutls-gcrypt-threads	2008-09-10 23:05:29.000000000 +0100
+++ cups-1.4.2/scheduler/server.c	2009-12-21 16:51:15.048553044 +0000
@@ -35,7 +35,9 @@
  */
 
 static int	started = 0;
-
+#if !defined(HAVE_LIBSSL) && defined(HAVE_GNUTLS)
+GCRY_THREAD_OPTION_PTHREAD_IMPL;
+#endif
 
 /*
  * 'cupsdStartServer()' - Start the server.
@@ -75,7 +77,7 @@ cupsdStartServer(void)
  /*
   * Initialize the encryption libraries...
   */
-
+  gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
   gnutls_global_init();
 #endif /* HAVE_LIBSSL */