stop caching the v1 directory so often.

svn:r6226

src/or/main.c

@@ -559,7 +559,7 @@ get_dir_fetch_period(or_options_t *options)
     return options->DirFetchPeriod;
   else if (options->DirPort)
     /* Default for directory server */
-    return 20*60;
+    return 60*60;
   else
     /* Default for average user. */
     return 120*60;