Funnily enough, most people from my (mexican) town knowingly pronounce "Halo" wrong, pronuoncing it right mostly gets weird looks despite the fact that they know it's the right way, but the strangest thing is, the common used pronounciation ("Hah-Lo") is not even how a mexican would traditionally read the word since "reading it the mexican way" should make the H silent, so it's reading it wrong in either language.