Hi,
I found a bug on WordPress 2.7 version. I am not sure where to report the bugs. If this is wrong place, please move it to appropriate location.
Bug:
if we use "chr(0)" without quotes we are getting the posts are not updated.
To replicate:
a. Disable the visual editor when writing
b. Click on add new to create new post (http://www.mydomain.com/wp-admin/post-new.php)
c. put some random title and use chr(0) in post input box
d. click publish
I tried on couple of my 2.7 blogs and am getting the error.