The version above is supposed to be a transparent PNG, so it may be the case that your browser doesn't support them. (I know this to be the case for at least one version of Internet Explorer on Windows, for example).
[Projoy] Maybe not. I think I know how to fix it so it works everywhere... but really I think IE should display transparancies properly, for goodness sake!
[rab, Pjy] I've got IE6, Mozilla and Opera on this computer. Only Opera renders the transparency correctly, both IE6 and Mozilla putting the logo in a little white oblong.