Water simulation strange behaviour


I was fighting with the water simulation and i discovererd that when i rotated the cube(domain) in object mode and changed the cubes centre, the requested Bake memory decreased dramaticly which gives the oppurtunity to increase the resolution. Strange? Or does anyone has a good comment on that.

I also started a thread about the simulation not filling a glass properly which can be found here:

Thanx for any comment,