diff --git a/src/mint/taler-mint-httpd.c b/src/mint/taler-mint-httpd.c
index 4fa867759..de0a0368e 100644
--- a/src/mint/taler-mint-httpd.c
+++ b/src/mint/taler-mint-httpd.c
@@ -105,7 +105,6 @@ handle_mhd_completion_callback (void *cls,
                                 void **con_cls,
                                 enum MHD_RequestTerminationCode toe)
 {
-  fprintf (stderr, "CC called (%p)!\n", *con_cls);
   if (NULL == *con_cls)
     return;
   TMH_PARSE_post_cleanup_callback (*con_cls);
diff --git a/src/mint/taler-mint-httpd_parsing.c b/src/mint/taler-mint-httpd_parsing.c
index 0f31e8652..9e7287f2b 100644
--- a/src/mint/taler-mint-httpd_parsing.c
+++ b/src/mint/taler-mint-httpd_parsing.c
@@ -29,13 +29,12 @@
 
 
 /**
- * Initial size for POST
- * request buffer.
+ * Initial size for POST request buffer.
  */
-#define REQUEST_BUFFER_INITIAL 1024
+#define REQUEST_BUFFER_INITIAL (2*1024)
 
 /**
- * Maximum POST request size
+ * Maximum POST request size.
  */
 #define REQUEST_BUFFER_MAX (1024*1024)
 
@@ -131,6 +130,7 @@ buffer_append (struct Buffer *buf,
       return GNUNET_NO;
     new_buf = GNUNET_malloc (new_size);
     memcpy (new_buf, buf->data, buf->fill);
+    GNUNET_free (buf->data);
     buf->data = new_buf;
     buf->alloc = new_size;
   }
@@ -273,7 +273,6 @@ TMH_PARSE_post_json (struct MHD_Connection *connection,
         ? GNUNET_SYSERR : GNUNET_NO;
     }
     /* everything OK, wait for more POST data */
-    fprintf (stderr, "Init %p\n", r);
     *upload_data_size = 0;
     *con_cls = r;
     return GNUNET_YES;
@@ -315,8 +314,6 @@ TMH_PARSE_post_json (struct MHD_Connection *connection,
             TMH_RESPONSE_reply_invalid_json (connection))
       ? GNUNET_NO : GNUNET_SYSERR;
   }
-  fprintf (stderr, "Deinit %p\n", r);
-
   buffer_deinit (r);
   GNUNET_free (r);
   *con_cls = NULL;
diff --git a/src/mintdb/plugin_mintdb_postgres.c b/src/mintdb/plugin_mintdb_postgres.c
index f2bc83677..8737809bc 100644
--- a/src/mintdb/plugin_mintdb_postgres.c
+++ b/src/mintdb/plugin_mintdb_postgres.c
@@ -3030,6 +3030,7 @@ postgres_get_coin_transactions (void *cls,
     if (PGRES_TUPLES_OK != PQresultStatus (result))
     {
       QUERY_ERR (result);
+      PQclear (result);
       goto cleanup;
     }
     nrows = PQntuples (result);
@@ -3072,6 +3073,7 @@ postgres_get_coin_transactions (void *cls,
         {
           GNUNET_break (0);
           GNUNET_free (deposit);
+          PQclear (result);
           goto cleanup;
         }
         deposit->coin.coin_pub = *coin_pub;
@@ -3083,6 +3085,7 @@ postgres_get_coin_transactions (void *cls,
       head = tl;
       continue;
     }
+    PQclear (result);
   }
   /* Handle refreshing */
   {
@@ -3129,6 +3132,7 @@ postgres_get_coin_transactions (void *cls,
         {
           GNUNET_break (0);
           GNUNET_free (melt);
+          PQclear (result);
           goto cleanup;
         }
       }
@@ -3139,6 +3143,7 @@ postgres_get_coin_transactions (void *cls,
       head = tl;
       continue;
     }
+    PQclear (result);
   }
   /* FIXME: Handle locked coins (#3625) */
   return head;