I am getting an error and can't figure it out. The error log says premature end of script headers: index.php. It does not happen everytime but each time that a page takes a long time to load I can check the error log and find this error for that time. It also seems that once that page loads pages will load fine for awhile until the blog hasn't been visited and then it will do it again. I would really like to get this fixed and have no clue what to do. Could it be a server problem? Also sometimes when this error occurs I will get a 500 internal server error.