My sister is a geophysicist (meaning she studies movement of the earth) and I asked her after the earthquake/tsunami in Japan that seemed to happen right on the heels of the really bad one in New Zealand if there had been a recent uptick in major earthquakes. Basically her explanation was that even though scientists can't predict when earthquakes happen and where, if you look kind of large-scale at data for say, number of earthquakes each year, there really isn't much variation year-to-year. When it seems like there are more major ones hitting, it's just because more major ones have happened to strike in plates that are under land (as opposed to under the sea floor, which makes up a much greater percentage of the earth's surface than does land) and that are in areas that are highly populated. How "bad" an earthquake is is just as much about how it affects populations of people and how it is portrayed by the media as it is about the measurement of the seismic waves! The vast majority of earthquakes that happen are ones that the general public isn't even aware of because they aren't felt by people and/or don't affect us in terms of damage.
So the short answer is, there probably will be another major earthquake soon, because major earthquakes are not completely rare occurrences. But I don't think that we should go ahead and read too much into that fact. :)