Namecoin... oh i see someone already pointed it while i was writing this Minicoin smallchange GroupCoin SolidCoin CrazyRabitCoin
btw if u get MMM to work i'll be impressed... think that been dead for a while? though markm the best source of knowledge for this kinda stuff... in fact if he post here.... everyone that reads his post should send him donations... the man just deserves it
While I can't solve your problems with the pool , I would reccomend setting up a p2pool node. Also scrypt based coins, eg litecoin, are more profitable to mine - source: dust coin.com