What can cause this message :
<partial-response id="j_id__v_0">
<changes>
<update id="j_id__v_0:javax.faces.ViewState:1">i+eTRcNJKFa/X70WEJFydAaAltIQr95KirDWpXlROBzc6LqS</update>
</changes>
</partial-response>
It appears every time I reload the page.