Ok, ok, now, I'll stop to post here and create a thread on the SDL forum.
I think this is time for me to change.
I dont think that SFML'll die because there are still some interessant modules than the window and graphics modules, I don't know the sound and the network modules of SDL but it seems there are not so good than the SFML ones which implements selectors.
I just hope that all of this'll be compatible.
So the thread here'll die.