Thanks for taking the time to make Ubuntu better by reporting this bug.
It will increase boot time a little as there will be a menu that wasn't there before (if you were on Windows first). The switching guide is being replaced by a new installation guide for Karmic so this won't be addressed, although should the phrasing come up in the new guide it will be reviewed and QA'd prior to release.
Thanks for taking the time to make Ubuntu better by reporting this bug.
It will increase boot time a little as there will be a menu that wasn't there before (if you were on Windows first). The switching guide is being replaced by a new installation guide for Karmic so this won't be addressed, although should the phrasing come up in the new guide it will be reviewed and QA'd prior to release.