By messed up I mean that files would not complete, in the . met file normally there is one line with the title of the downloading file, while in this case there were more lines, with different titles, and there was no correspondence between the .met and the .met.bak file titles...
I don't know if all this happend the first time I started amule after emule, or by going continuously from one to the other
I wasn't enough audacious to link directly the config files of emule, but I've probably copyed them hoping that cathegories would match... anyway not a brilliant idea I suppose!