I'm not sure that you wanted to highlight the warning label as your subject? I'm also not particularly keen on the radial blur.... God I'm fussy aren't I?
I do like close up DOF shots of this kind of thing, but I feel that you might benefit from a subject of more significance to the viewer. One I've seen before which is quite fun is to lever off the keys which spell your name, reattach them in that order and use the DOF to make your name the only keys in focus and the rest slightly out. At first you look at a keyboard shot, then you realise that the letters aren't right, then you see the name.
It's a great idea, but I think the lack of initial response is due to perplexion by the viewers - they can't make anything meaningful from your composition.
I try to say what I feel in a positive and constructive way, but shoot me down if you think I'm wrong.
Rob