I admit I struggled a little bit with language when I first arrived here. Not that I found my new countryfolk hard to understand, but I don't have the greatest hearing in the world to begin with. Let me rephrase: when there's a lot of background noise, I have a very hard time picking out an individual voice, even if that person is sitting right next to me. I often have to turn my head so I can make out what a person is saying if I'm in a pub or a restaurant.
Lately though I noticed I've been doing it less, especially when I'm listening to Brits speak. I know my hearing hasn't improved at all (what?) so I can only assume I'm getting more used to listening to British voices. The funny thing is they don't seem any more or less clear to me per se but I certainly ask them to repeat themselves less, and I find myself smiling and nodding a lot less as well.
Oddly enough I've noticed that I've started to pick up a couple of Brit-isms, mostly in my word choices (a fine example being "I've"). But my good old Yankee accent is completely intact. I was in New York less time than I've been here and managed to pick up more of a New York sounding accent (for a time, anyway, but don't ask me to say "dog" without saying it "dauwg" if I'm not paying attention) than I sound anything resembling British. Which is good because I don't want to be Madonna.
It's one of the less-noticeable things about living here but I admit that it does make me feel like a bit less of an outsider, likely because it makes me feel a little less self-conscious. Honestly I haven't had the feeling of "hey, I'm an American!" here in quite a while. After a while you begin to feel as though you belong and not asking people to repeat themselves every three sentences certainly helps.