"Artic" for "Arctic" rather annoys me. There is actually a letter missing there.

My husband was in a class at the University of Chicago taught by an Indian professor with a heavy accent. He asked the students if they understood the proper use of a "messopotometer". When they all looked blank he began raging, "What? You're all biochemistry majors? The university just spent $10,000 on a brand new messopotometer and you don't even know what it is?" With that clue, the whisper began to go around, "Mass spectrometer!" (I hope I've spelled that right!)

I recently heard a radio piece where a linguist commented that the English language is constantly changing, especially in pronunciation--or "pronounciation" as my Canadian friend used to say. She claimed it was another Britishism, but I've never been sure. I assume she meant how you pronunce things.