=== modified file 'src/gnutls.c'
--- src/gnutls.c	2011-09-04 11:30:01 +0000
+++ src/gnutls.c	2011-10-31 22:58:38 +0000
@@ -59,10 +59,17 @@
    confused with actual gnutls functions -- such as the gnutls_read
    preprocessor macro.  */
 
+/* Becomes true if GnuTLS is initialized. */
+static bool ssl_initialized = false;
+
 static gnutls_certificate_credentials credentials;
 bool
 ssl_init ()
 {
+  /* GnuTLS should be initialized only once. */
+  if (ssl_initialized)
+    return true;
+
   const char *ca_directory;
   DIR *dir;
 
@@ -104,6 +111,9 @@
   if (opt.ca_cert)
     gnutls_certificate_set_x509_trust_file (credentials, opt.ca_cert,
                                             GNUTLS_X509_FMT_PEM);
+
+  ssl_initialized = true;
+
   return true;
 }