Eva,
Is it possible that you are subscribed to the list, perhaps unknowingly, under
a different address than the one you list?  Maybe you put in a middle initial,
or left out the "." between your first and last names?  When this happened to
me, I contacted Hugh Agnew, the list manager, who found the problem and cleared
it up by identifying the two names I was inadvertently subscribed under.

Good luck!
Bela