Yet another person with the same problem. Just updated to 2.0.1 and get this error when I publish a new post. Hosted by GoDaddy. Post seems to get to the web site. Pretty annoying. Guess I will go back to 2.0 until fixed.
WordPress database error: [Lost connection to MySQL server during query]
INSERT INTO wp_postmeta (post_id,meta_key,meta_value) VALUES (’31’,’_pingme’,’1′)
Warning: Cannot modify header information – headers already sent by (output started at /home/content/j/l/t/jltomcat/html/wp-includes/wp-db.php:102) in /home/content/j/l/t/jltomcat/html/wp-admin/post.php on line 59