Let's see, OpenOffice on every computer I have (NeoOffice on my MacBook Pro) and I save in ODF. Only when somebody HAS to have the document in MS format do I ever do a save as. And that file goes out and off my HD just as fast as I can send it. If it comes back in, it gets converted to an ODF format, worked on, then saved as ODF. A few folks actually are thankful I can send them in ODF or PDF rather than any MS Office format. Saving to an MS Office format by default in an ODF capable office suite is stupid and kills the whole point of going with an alternative to the proprietary MS Office formats. Talk about setting the ODF adoption back.