I have just upgraded to 3.0.4 and it seems to have broken the hack.
When I use the Quick edit function I get this error
Code:
Database error in vBulletin 3.0.4:
Invalid SQL:
UPDATE post
SET editlevel = '0',
dateline = '39599',
username = '',
userid = 0,
ipaddress = ''
WHERE postid = 1
LIMIT 1
mysql error: Unknown column 'editlevel' in 'field list'
mysql error number: 1054