I have 700+ title tag duplicates showing in WMT.
Every first link in that picture is as duplicate link of second one. I don't know from where the first link got indexed by Google when that link doesn't exist in the site. It's showing the title of every page as link.
How can this happen? I have checked entire site I didn't find where the second version is linked.
I have no images linked to with duplicated version of URL.