My team is all having similar issues when we try to format documents. If need to make a word bold, I highlight the word, and use Cntl-B or click on the B on the ribbon. The entire document is bolded! When you undo, everything goes back the way it was and the word that I wanted bolded remains bold. The same thing happens with numbering, bullets, almost any kind of formatting change to a previously written document. Sometime it even happens with a new document that I've saved and reopened. Has anyone else has these issues? We have just recently moved to 2007 and didn't know if this was a known issue or if it just is something that my team is experiencing. We have all experienced big black areas in the document that just appear. When you scroll up or down it will disappear. Maybe we don't have enough memory on our machines? We are all pretty advanced users, but this has us stumped!