To quote from Danny (with his assumed permission, of course
)
"In some browsers it appears that using the preview reply or possibly even when editing a post the function strips the carriage returns. Nothing we can do about it as it is a problem with the users browser and its interpretation of javascript."
Mac - NB the apostrophes around 'feature'
BTW, Mike, what were you trying to do with CR that didn't work?
Using the WYSIWYG eidtor I do not seem to have the CR drop on preview, but only on edit.