TMA have frozen all current threads and disabled the create new post buttons. TMA have often (and increasingly) been criticised for censoring their forums. It was seen as a place to praise TMA but criticism was viewed in a very poor light. Perhaps they just got sick of locking/deleting threads. Perhaps they just decided to take their ball home. Perhaps they've ceased trading. Whatever the reason, it's just another example of TMA's lousy PR. D.