Hmm, it seems as though I'm not getting notified when new posts go up here anymore. Oh well, I'll have to check more often.
Anyway, Speak With Animals won't work with most Summons from the Summon Monster table. Summoned monsters are actually Celestial or Fiendish, and are therefore Magical Beasts, not Animals. You can, however talk to them in Celestial or Infernal instead. Remember also that Speak Language is a normal skill (although cross-class for most classes), and putting a rank into it teaches you a new language.
Good luck with the move!