can't log in automatically

[Merlin-le-sagouin]

hello...
i dont know if this topic is in the appropriate section of the forum but... if not please move it to the right one.

i'm a french bsplayer user , and i find this forum very helpful, but i don't understand why i cant login automatically, as i select it on the login box. ?
can some one explaim me if it's a bug or if i'm stupid... (it works on other php boards I use...)

thanks