You get more for your money with Microsoft! 
Dave
there is probably some truth to that - lol
they must have extended the spec - or used parts of the spec previously unused...
to add things like font embedding, margins, edit histogram - all kinds of info
so - the added file size isn't just a bunch of zeros (like the system registry - lol)
if you play with the options (or maybe use Paste Special), you can probably get the size down