wp_update_post

Hello,
I spent three hours already and cannot make it work. I am trying to update the post content using wp_update_post function, but it does not seem to work.
Here is my code


$data = array(
'ID' => $postID
,'post_content' => stripslashes($output)
,'post_category' => array($catID)
);
wp_update_post($data);
die(print_r($data)); //this one is for debugging, and nothing changes whether it is here or not


print_r outputs the following

Array ( [ID] => 982 [post_content] => Мероприятие: one more
Место проведения: hope it works
Описание: dfdf123
Начало в: 00:00:00
Дата: 2012-01-30
Конец в: 00:00:00
[post_category] => Array ( [0] => 26 ) ) 1

I checked the database, entry seems fine

--
-- Dumping data for table wp_posts
—

INSERT INTO wp_posts (ID, post_author, post_date, post_date_gmt, post_content, post_title, post_excerpt, post_status, comment_status, ping_status, post_password, post_name, to_ping, pinged, post_modified, post_modified_gmt, post_content_filtered, post_parent, guid, menu_order, post_type, post_mime_type, comment_count) VALUES
(982, 1, ‘2012-01-30 14:16:29’, ‘2012-01-30 14:16:29’, ‘Мероприятие: one more
Место проведения: hope it works
Описание: dfdf123
Начало в: 00:00:00
Дата: 2012-01-30
Конец в: 00:00:00
‘, ‘one more’, ”, ‘published’, ‘open’, ‘open’, ”, ‘one-more’, ”, ”, ‘2012-01-30 14:25:09’, ‘2012-01-30 14:25:09’, ”, 0, ‘https://ruconnect.co.uk/982/one-more/’, 0, ‘post’, ”, 0);

Btw, what is that number 1 doing in the end of print_r?..

Thank you very much in advance