JudasIscariot: Please update your game to version 2.0.2a and let us know if the problem is solved or not :)
Yep, same thing, RAM usage goes to approx. 1.300 MBs and then it crashes.
EDIT: OK, this is a new one, I went to misc settings and hid the floating numbers and that helped with finishing the Bonus 3 level that would crash before but immediately after finishing it and pressing the "Bonus" button to go to no.4 it crashed while in the map screen.
My guess, when the RAM usage goes beyond 1.3, maybe 1.5 GB then the game crashes. Thing is, that kind of a game should never go at 1.5GB RAM to begin with...