i'm about to try, i had turned them off before because they just werent coming thru and i heard they had not been included in the push files or something. i'll see what happens.
its still been hit and miss, but its sending me the tritone sound when i get different notifications on facebook. its not consistent at all though. cool find ivan!
I got my first sound just yesterday. Overall the push still seems a little hit and miss, but at least it's better then nothing. I still think this is an issue with the FB app and not the iPhone in general. I also think that with local push coming in OS 4 it will be much better.