Most of the shouts did except for (as far as i know up to now) Unrelenting force, when i shout Fus Ro Dah, it only does Fus Ro (and yes i have the full shout) and when i try to visit towns on the quick map by saying their name only some work, i have trouble with Riften, Markarth, Solitude, and Morthal (sometimes)...
I have a weak scouse accent and speak perfect english... and i have to put on an american accent or really emphasize words somestimes to get it work...
Is anyone else having this problem?

but where I'm from we kinda sound Irish so I'm assuming it's my pronunciation of some words, I find just like you I need to emphasize certain parts of words, or try my best to mimic an american accent as well
I don't find it too bad just a couple of words that I have to repeat once or twice, or it could be the noise level of the surrounding area due to the kids and what not 
