Both error messages are issued byYahoo servers during maintenance periods - had a lot of questions yesterday ( 19th January 2011 ) during the Yahoo mail server overhaul
1 Answers · Yahoo Products · 25/01/2011
Having the same problem error code FFC-1 and sometimes Launch Empty Response it seems to rotate back and forth
3 Answers · Yahoo Products · 18/01/2011
It looks like a Yahoo server problem because several people have been asking this question. Hopefully it will be fixed sooner or later. It has been reported by someone on Yahoo's...
2 Answers · Yahoo Products · 24/01/2011