I got Professor Paul1290's fixed and will push that in a bit.
Looking at c4sc4's one now, and it's definitely different from the first one. Oh joy.
BobTheJanitor: For the random stuttering, I'm going to guess it's throwing exceptions? Either that or loading something at a time it shouldn't be? You could turn on the logging of image loading (it's under the FPS toggle in the Graphics tab of settings) and see if that sheds any light. But if it's not doing it anymore, then it's probably not worth it.
Regarding the RAM usage, that will vary heavily, but yeah: baseline usage is about a gig, and it's easily going to use up to 2gb or so. Potentially more, although the way that we dump and reload images as needed makes it so that it doesn't just skyrocket. To load all the art assets in the game at once would put you well over 3gb of RAM at this point, though.