First I tried to edit the php plugin, where there is &lang, removing the/ at the end, because when WP add the reference to the page is added automatically with the /
The problem of double // appeared to be resolved, but I still have many problems with duplicate metatag and relative decrease of pagerank and traffic, so I solved in the only way possible: I removed Global Translator.
After removing GT, I had to modify the robots.txt file and .htaccess to “help” the search engines to clean up errors; now been two weeks and errors begin to decrease.
A good plugin for the translation would be useful, but I do not have yet found one that does not cause problems with SEO.
