I would suggest a little patience. Try to play the detached observer for awhile. After all, you don't know all the details and dynamics of this new environment. And it sometimes happens that the first impression is the wrong one.
If, however, after a time of passive observation, you conclude that it's wise to talk, then by all means do so. But I would first wait some time and just try to read people, without getting caught in any office politics or taking any sides.