.htaccess is bugging out on 2 links?

[eluser]amites[/eluser]
Hello,

I have a bug showing up with 1 pair of links that are somehow messing up in .htaccess

the site can be seen at:
http://fromanonymous.com/database/

the links are
http://fromanonymous.com/database/msg/block.html
http://fromanonymous.com/database/msg/unblock.html

both of which are being routed improperly, with the .htaccess below in place, without the .htaccess to remove the trailing index.php the site works properly, with the same .htaccess file on my local server it is working properly, any ideas?

Code:

<IfModule mod_rewrite.c>
   RewriteEngine On

   RewriteCond %{REQUEST_FILENAME} !-f
   RewriteCond %{REQUEST_FILENAME} !-d
   RewriteRule ^(.*)$ index.php/$1 [L]
</IfModule>

<IfModule !mod_rewrite.c>
   ErrorDocument 404 /index.php
</IfModule>