User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:23.0) Gecko/20100101 Firefox/23.0 (Beta/Release) Build ID: 20130803192641 Steps to reproduce: Press help-> About Firefox and it displays the current version and other details. On clicking End-user rights we get about:rights in a tab. Clicking on Mozilla Public License redirects to a page that doesn't exists and gives 404 error. I am using Firefox 23.0 for Linux Mint 15. Actual results: It redirects to a page that doesn't exist. Expected results: It should give me Mozilla Public License page www.mozilla.org/MPL/2.0/
Thanks for reporting this. Bug 905532 tracks the 404; this bug should probably be marked a duplicate of that one, but it's not clear if the 404 is intentional or not (surely not) or will otherwise require this link to be changed, so for now I'll mark that bug as blocking this one.
Looks like bug 905532, which was fixed recently, was not intentional, so this should just be a dupe. Thanks again for reporting this.