yap, that sounds about right. is not the fastest thing ever, but it works really nice...i like it a lot.
i have a theory why is working now (although i have no clue why it did work for me and RoaldFre before):
what i did in the last build is to change the vram address to one that has a 720x424 image while the previous build was using an address that has a 720x624 image. now if you look at the bottom of your lcd you have a dark band (i bet about 480-424 pixels) where there's no image and it's used by canon as display area. if you use DISP button you will see that are being populated. ML is also populating this are with its own info (ISO, apperture, shutter, lens data...etc).
if my theory is true than the vram address that we should be using is the one that has the 720x424 image. I would really appreciate if anybody else that tries this build will post with their own experience. On my camera i can see blue zebra on that bottom black strip which if the theory is proven right i believe is a bug.