When login Wordpress to check-in some document, I got a shocking HTTP 403 error page. No, it is not the fault of Wordpress, but cause by the popular Wordpress antispam plugin Bad Behavior.
http://www.bad-behavior.ioerror.us/2007/12/06/bad-behavior-2011/
Brief explanation from the author, Michael Hampton
Update: Some people have asked for more details on what exactly happened. In brief, yesterday I moved all of my sites to a new dedicated server. In the process, I decommissioned an old blacklist I was running which I thought wasn’t being used, not realizing that Bad Behavior was still set to use it. Shortly afterward, I found myself locked out of my own blog, just as you all did. So therefore, this release.
Kudos to the author for making a quick fix for the great wordpress anti-spam plugin. 
Fixing tips
1. Download the patches from this URL : http://www.bad-behavior.ioerror.us/download/bad-behavior-2.0.11.zip
yes, you should ALWAYS the URL before you click it 
2. Copy the zip file to your wordpress directory, locate inside the plugin directory, e.g.
wp / wp-content / plugins /
3. Delete the Bad-Behavior folder
4. Unzip bad-behavior-2.0.11.zip from the plugins folder.
5. Done
1 response so far ↓
1 Jason // Dec 6, 2007 at 8:31 pm
Wasted one whole day trying to debug my wordpress and ask my webhost to check what’s wrong. Sighs.
moo_t : Seems I must ping this new once more on PPS