Have spend all day on this issue. This page title issue is messing up my SEO. Here's the problem. My calls to <?php wp_title(); ?> in header.php are returning the page name with the site title jammed up against it, e.g. About UsiMedicineReview, where page title is About Us and site title is iMedicineReview. Of course it should just be cleanly returning page name as all my other WP sites do. (I am seeing this by viewing page source.) It seems not to be plugin related, although I admit to not having deactivated all mine, which is a hassle. None of them are designed to mess with the title tag, as far as I can see. Anyone who really knows the guts of WP, I'd appreciate some theorizing. Or a suggestion as to how to nail down the source of the problem. Thanks.