Do Muslims believe that judgement Day will not come till they fight / kill the Jews ?

Depends on the Muslim, basically. I'm willing to guess a substantial portion do, simply because they've been brought up to believe that. Some Muslims (Irshad Manji, for one) say that the Qur'an is so contradictory, you HAVE to pick and choose what to believe Muhammad was trying to say. As for what "Islam" believes, that's a real headache - some Muslims will tell you that no matter how many Muslims believe differently, there's only one true "Islam;" one the other hand, Islam is a religion, and what defines a religion if not the distinctive actions and beliefs of its followers?