BuddyPress.org

@robertnorcross looks like the style enqueued by BuddyPress is superseded by your theme’s styles for form labels/inputs which could need some float: left; clear: left;

@robertnorcross can’t guess what’s needed to override your theme’s styles. Do provide throw-away username and password to site so we can help you. Delete the account after the issue’s resolved.

Otherwise, you could download Firebug, a Firefox add-on to inspect elements and find resolution to style woes.