wp2.3.1 new errors/bugs

I’ve just uploaded the new version of wp 2.3.1 and am getting these errors upon saving pages and posts.

WordPress database error: [Table ‘wordpress.wp_categories’ doesn’t exist]
SELECT categories.* FROM wp_categories as categories INNER JOIN wp_post2cat as post2cat ON post2cat.category_id = categories.cat_ID INNER JOIN wp_posts as posts ON posts.ID = post2cat.post_id WHERE categories.category_nicename IN ( ‘blog’, ‘about’, ‘contact’ ) AND categories.category_parent = 0 AND posts.post_status = ‘publish’ AND posts.post_date_gmt <= ‘2007-12-27 11:48:00’

WordPress database error: [Table ‘wordpress.wp_categories’ doesn’t exist]
SELECT categories.* FROM wp_categories as categories INNER JOIN wp_post2cat as post2cat ON post2cat.category_id = categories.cat_ID INNER JOIN wp_posts as posts ON posts.ID = post2cat.post_id WHERE categories.category_nicename IN ( ‘archives’, ‘about’, ‘contact’ ) AND categories.category_parent = 0 AND posts.post_status = ‘publish’ AND posts.post_date_gmt <= ‘2007-12-27 11:48:00’

WordPress database error: [Table ‘wordpress.wp_categories’ doesn’t exist]
SELECT categories.* FROM wp_categories as categories INNER JOIN wp_post2cat as post2cat ON post2cat.category_id = categories.cat_ID INNER JOIN wp_posts as posts ON posts.ID = post2cat.post_id WHERE categories.category_nicename IN ( ‘blog’, ‘about’, ‘contact’ ) AND categories.category_parent = 0 AND posts.post_status = ‘publish’ AND posts.post_date_gmt <= ‘2007-12-27 11:48:00’

WordPress database error: [Table ‘wordpress.wp_categories’ doesn’t exist]
SELECT categories.* FROM wp_categories as categories INNER JOIN wp_post2cat as post2cat ON post2cat.category_id = categories.cat_ID INNER JOIN wp_posts as posts ON posts.ID = post2cat.post_id WHERE categories.category_nicename IN ( ‘archives’, ‘about’, ‘contact’ ) AND categories.category_parent = 0 AND posts.post_status = ‘publish’ AND posts.post_date_gmt <= ‘2007-12-27 11:48:00’

WordPress database error: [Table ‘wordpress.wp_categories’ doesn’t exist]
SELECT categories.* FROM wp_categories as categories INNER JOIN wp_post2cat as post2cat ON post2cat.category_id = categories.cat_ID INNER JOIN wp_posts as posts ON posts.ID = post2cat.post_id WHERE categories.category_nicename IN ( ‘blog’, ‘about’, ‘contact’ ) AND categories.category_parent = 0 AND posts.post_status = ‘publish’ AND posts.post_date_gmt <= ‘2007-12-27 11:48:00’

WordPress database error: [Table ‘wordpress.wp_categories’ doesn’t exist]
SELECT categories.* FROM wp_categories as categories INNER JOIN wp_post2cat as post2cat ON post2cat.category_id = categories.cat_ID INNER JOIN wp_posts as posts ON posts.ID = post2cat.post_id WHERE categories.category_nicename IN ( ‘archives’, ‘about’, ‘contact’ ) AND categories.category_parent = 0 AND posts.post_status = ‘publish’ AND posts.post_date_gmt <= ‘2007-12-27 11:48:00’

Warning: Cannot modify header information – headers already sent by (output started at /var/www/vhosts/footballworldwide.com/httpdocs/wp-includes/wp-db.php:160) in /var/www/vhosts/footballworldwide.com/httpdocs/wp-includes/pluggable.php on line 391

And then i need to click back to go back to wp.
Can anyone please help?

Also i have noticed on the new version that when an image is uploaded and sent to editor i can not use the alignment function. Every time i do and then save i lose the image. Or even when i upload images and send to editor it does not send but gives the error code.

When i write a page and use home as my slug the title still appears under the pages category. It never used to do that. The home page title would not appear under the pages category. I have a static front page installed and never had these problems with the previous version.

Please someone help.

cheers
Steve