Ok I've thinking...
I remember having read somewhere that when a disaster occurs (i.e. 09/11 or the tsunami some years ago), society focuses its energy in that event and there's a rise in the planet's vibrational level.
As far as I remember vibrational level has an exponential growth (it's not cumulative: you don't add the vibration of each person, you multiply it!).
So, if Earth people energy is focused in Haiti, it could perfectly have been an increase in Earth's vibrational level and that could be the reason of what we're experiencing, isn't it?
Aaaaaaaaaand, we also have an increased seismic activity all arround the world, and the sun's activity is increasing today...