sergio@sergio-Inspiron-N5110:~/.mozilla/plugins$ firefox
X Error of failed request:  BadRequest (invalid request code or no such operation)
  Major opcode of failed request:  155 (GLX)
  Minor opcode of failed request:  19 (X_GLXQueryServerString)
  Serial number of failed request:  13
  Current serial number in output stream:  13
sergio@sergio-Inspiron-N5110:~/.mozilla/plugins$