I am getting an error message when I try and ask a question

at:
http://theovercast.ca/questions/
if someone tries to ask a question, or click "unanswered"
they get this error message that the page couldn't be found:
http://theovercast.ca/question/recent/ask/
I can see the reason why:
It is directing people to:
http://theovercast.ca/question/recent/ask/
instead of what it should be:
http://theovercast.ca/questions/ask/
and
http://theovercast.ca/question/recent/unanswered/
instead of
http://theovercast.ca/questions/unanswered/

How can I fix these URLS, to remove the "RECENT" from those URLs, and add the "s" after question?