ubuntu 10.04 64bit firefox 11 doesn't load pages

After latest update firefox 11 (from ppa mozillateam-firefox-stable) doesn't load pages. When I type address in address bar nothing happens, when I try pressing green button "go to webpage" nothing happens, displaying plugins or proxy settings doesn't work. Selecting webpage from my bookmarks actually works and loads the page. Clicking on any link inside a webpage also works.