There must be a bug in the forum next page or previous page
and even in the menu displaying the post dates :
I cannot see a few messages (from the 2/12 and 3/12/03) there 
<http://forum.httrack.com/index/20031201/index.html>
While doing a search gives
<http://forum.httrack.com/search/index.html?js=1&lang=en&what=noindex&rule=EXACT>
displays them