I've done all of that (plus removed all my themes) and still boot with around 39 MB app memory. My device memory is fine. I have noticed that even with less memory, it seems to run so much better and it takes a week to get down to 20MB. I think that's amazing. I know that the upgrade took more memory, but I read somewhere that it took some for RAM, so the it looks like less memory, but what is there is working harder for us. Dunno; it sounds nice, even if it isn't true.