Don't waste your CPU cycles on the 1GH pool, the guy running it has confirmed his pool does not work with Maxcoin. Here is a tweet from him replying to @maxcoinproject:
1gh does not work indeed with your cpuminer. No stratum pool does, you messed up txids.
https://twitter.com/1ghcom/statuses/431591291642597376
According to him the Maxcoin devs messed up something.