Re: MS Word and complex documents
"Fast Saves" is one of the worst defaults of Word! Any changes are added onto the document, then further changes are added etc. when loading, the original is opened and the subsequent changes are then added one after the other, taking longer and longer - eventaully the document is too large to save even if the finished item is only one page long! Select "always create a backup" at least you can easily go back from a disasterous editing session.
MikeD