Incidentally, I found 2 duplicate strings in lnspector's localizedStrings.js. I decided to teach the checking script to find them.
Created attachment 79915 [details] patch
Manually committed as http://trac.webkit.org/changeset/76511: 2011-01-24 Mikhail Naganov <mnaganov@chromium.org> Reviewed by Yury Semikhatsky. Web Inspector: Find duplicate strings in localizedStrings.js, update it. https://bugs.webkit.org/show_bug.cgi?id=53005 * English.lproj/localizedStrings.js: * Scripts/check-inspector-strings: