News Links not working

Here is my testpage "leico.de" (without www).

I use the latest version here from the site.

Some links to categorys or articles end up in deadlinks and i dont know why?

anyone else knows this problem or an solution for this??

Thank you

Edit ( It only happened to the frontpage article, which used to be in the section)
To get my category links working i had to change the category url_section (at the bottom of the mod_tab_news.php) file to this (removed the $itemid at the end)

$url_section="index.php?view=category&id=".$ro w->id;