Nicky,
I've had the same problem and I've done a few of different things - first if you look at the size of your layout while in .png after adding only a few items, it's huge. So I insert a shape and use "fill with picture" instead of laying the backgrounds directly on the LO, this seems to keep the size down. Also, I've added an extra hard drive where I store all of my "stuff" so that it doesn't bog down my system. When I open a new layout, I immediately save it to this hard drive. Also, if you flatten your background or your pics and mats/frames once you have them the way you like it seems to take less bytes. However, this can be tricky if you're like me and like to move things around. Good luck
