I was getting the infamous "headers already sent" error while adding new posts, and saving drafts. After reading the forums and Googling, I found a number of culprits and made some changes.
In wp-includes/general-template.php I made this change to line 65:
//echo get_bloginfo($show, 'display'); (basically commented the line)
That solved my original problem, but this particular line outputs the blog title for the admin interface. That means my dashboard title now reads
> Dashboard - WordPress
How can I get them both working?