That's odd. You didn't change anything other than the position, did you? (Oh, thanks Mark, for providing the example, that was probably much more helpful than my explanation  ;))

Perhaps the smoke effect needs to be moved downwards too? I'll look in the xml file later and see if I can find anything.
I can't seem to figure out what your 2) means (the Google Translation is poor). What language are you translating from?  :)