I was always taught that Vitae (in Curriculum Vitae) was correctly pronounced "Vy-Tee". I have heard other people say "Vee-Ty" so often now that I am beginning to doubt my memory and stick to saying CV.
Re: jewellery/ jewelry. Most common pronounciation I've heard is "JEWL-ry", although I have heard "JEWL-uh-ry" & accepted it as correct. "Jew-ELL-er-ree"? No, never
I had a History teacher who used to say "Commonist" instead of "Communist", which drove me crazy - we were studying the Russian Revolution so it came up quite often. And I was 15 (not the most tolerant age).
My biggest frustration is "pacific" instead of "specific". Surprisingly common.