Just to add, once I get the error 404 page not found, if I manually change the link
from: "http://localhost/documentsMedical_StudentsCFeedback/Feedback%20in%20Education.doc"
to: "http://localhost/documents/Medical_Students/Feedback/Feedback in Education.doc" then it works, so as you say somewhere backslashes are appearing.
EDIT
Just to add as well, it appears that with every subfolder that appears, some how the "" is being auto generated instead of "/".