Last time we were sure there were alien signals, it was the lighthouse effect of a pulsar. But this looks indeed different.
Really, among those millions of millions of stars, the probability of other life (of any kind and whatever 'it' looks like) is pretty high.
But as Stanislav Lem said, the "window of contact" (time-and location-wise, to receive signals) is highly improbable.
I just hope, if there ever IS a contact, it will not be screwed up by some "great" military human minds
