Does anyone know why Powerpoint file sizes in Office 2011 are so large? I have a 24 slide presentation that is only text (images etc. to be added later). I went to email it to my colleagues and found it was 4.5MB. Thinking that can't be right, I did a little searching and tried changing around the save settings, but it always saved it as a 4.5MB file size even though I have no images, graphs, charts, or anything but text in the presentation. So I rebooted into Windows 7, loaded up the file in Powerpoint for Windows, saved it and I came out with a 612KB file size. 612KB. Is there any reason why Powerpoint for Mac is adding nearly 4MB to the file size? I'd so much rather work in OSX, but it seems rather ridiculous that Powerpoint for Mac is making the files so huge. Any help or suggestions would be greatly appreciated!