WordPress database error:

For:
http://www.willtrav.com/travelnews/

Updating the last 2 posts I get:

WordPress database error: [Lost connection to MySQL server during query]
INSERT INTO wp_postmeta (post_id,meta_key,meta_value) VALUES (’12’,’_pingme’,’1′)

Warning: Cannot modify header information – headers already sent by (output started at /homepages/4/d125049285/htdocs/travelnews/wp-includes/wp-db.php:104) in /homepages/4/d125049285/htdocs/travelnews/wp-includes/pluggable-functions.php on line 272

How ever the 2 post do show up.

Not sure what to ?