set your language to portugese again in [http://www.google.com/preferences?hl=pt-BR]

Clear the cache and the cookies from sites that cause problems. "Clear the Cache": *Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now" "Remove Cookies" from sites causing problems: *Tools > Options > Privacy > Cookies: "Show Cookies" You can also do a search on the about:config page to see if any point to the Japanese Google site (google.co.jp) or the page that you get. Type <b>about:config</b> in the location (address) bar to open the <i>about:config</i> page and press the "<i>Enter</i>" key, just like you type the URL of a website to open a website.<br /> If you see a warning then you can confirm that you want to access the about:config page.<br /> *Use the Search bar at the top of the about:config page to locate preferences more easily *Preferences that have been modified show as bold (user set) *Preferences can be reset to the default via the right-click context menu if they are user set *http://kb.mozillazine.org/about:config