Your internet connection may be restricted, In my office I can get theses kind of problems disappearing themes, Gtalk server timed out, but it works well in my home PC. may check the settings of network connection in firefox solve the problem.
-- when starting firefox in terminal the themes not loaded https://bugs.launchpad.net/bugs/316157 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs