Just asked my neighbour, a Dulcie, what she has had her name shortened to, mostly Dulce, and once when she was 11, a boy called her Dull, then laughed. She trod on his toe, everyone laughed at him, and she has never heard it since.
People seem to be over thinking the dull thing, I mean people call kids Robert, Robyn etc, even though it has the syllable rob at the beginning, which you could think had negative connotations. There are probably lots of other egs which I'm to tired to think of, but you get my drift.
Oh yes, I forgot to say , I like the name.