Out of range value adjusted for column 'moderate'

Just installed Drupal and administered access to forums etc so all authenticated users have permission to submit new topics. But when an authenticated user submit a new topic he gets:

Page not found
Your forum topic was created

And in the log I get:

details
Type php 
Date Sunday, February 26, 2006 - 13:12 
User Kalle 
Location /?q=node/add/forum/0 
Message Out of range value adjusted for column 'moderate' at row 1 query: INSERT INTO node (title, body, format, uid, type, teaser, status, moderate, promote, sticky, comment, created, changed, nid) VALUES('Kalle', 'test', '1', '3', 'forum', 'test', '1', '', '1', '', '2', '1140955948', '1140955948', '19') in C:\wwwroot\magnus\includes\database.mysql.inc on line 66. 
Severity error 
Hostname XXXXXXX

As an administrator I can submit topics. And if I change acces for authenticated users to have permission to administrate forums they can submit topics. But that's not how I want it...

What should I change to make it work?

Running Drupal 4.6, Apache 2, MySQL 5 on Win 2000.