Predictive writing just suggests me my friend's names!

I've just installed ICS on my Samsung GT-s5660. The Italian dictionary is installed, but still I can't get suggestions when I'm writing. It just suggests me names from my address book and punctuation marks. I could use another keyboard instead of the native one, but I don't like them. Could it be because of that "Japanese IME" installed by default? I can't de-select it! Thank you in advance! :)