Dear Gretl Developers, Today a colleague of mine noticed that Gretl's X-12-Arima analysis has an important problem. Suppose we have two series named "teste_1" and "teste_2". If someone try to make X-12 adjustments through the GUI ("Variable -> X-12-ARIMA analysis"), Gretl overwrites the seasonally adjusted series due to the fact that it uses the same file name for the adjusted series "test_d11". Moreover, Gretl maintains the same file description: "seasonally adjusted teste_1 (X-12-ARIMA)" Best regards, Henrique C. de Andrade Doutorando em Economia Aplicada Universidade Federal do Rio Grande do Sul www.ufrgs.br/ppge