White Screen Returns on Save Draft, Preview, Commenting

I erased and reloaded 3.5.1 after getting white screen errors and a “header” error. Reloading and deleting old plug ins seemed to make the errors go away. I continuously checked previewing posts and making comments on the blog and those functions worked. All seemed to be well.

Then I wrote a new post. As soon as I hit “save draft,” the white screen returned. Now I get it every time I save, preview, try to add a comment, or even logout (all of which I could do before successfully).

This is the sole error I get when I save a draft or make a comment:

Warning: Cannot modify header information – headers already sent by (output started at /services2/webpages/c/h/christianfighterpilot.com/public/blog/wp-settings.php:3) in /services2/webpages/c/h/christianfighterpilot.com/public/blog/wp-includes/pluggable.php on line 876

However, when I try to logout, I get

Warning: Cannot modify header information – headers already sent by (output started at /services2/webpages/c/h/christianfighterpilot.com/public/blog/wp-includes/functions.php:3) in /services2/webpages/c/h/christianfighterpilot.com/public/blog/wp-login.php on line 368

Warning: Cannot modify header information – headers already sent by (output started at /services2/webpages/c/h/christianfighterpilot.com/public/blog/wp-includes/functions.php:3) in /services2/webpages/c/h/christianfighterpilot.com/public/blog/wp-login.php on line 380

and 14 more just like it.
Warning: Cannot modify header information – headers already sent by (output started at /services2/webpages/c/h/christianfighterpilot.com/public/blog/wp-includes/functions.php:3) in /services2/webpages/c/h/christianfighterpilot.com/public/blog/wp-includes/pluggable.php on line 697

I’ve referenced those lines (cookies and author information) and can’t figure out why I suddenly have an error.

Any help?