[Typo3] I want 404's !!

[Christoph Koehler]

Hello everyone!

I have a problem: I don't get any 404 errors....
Google has some old links of my old website that don't exist, but when I  
click them I always get the main page of my new site, no 404 page.
I have realurl installed, but even with it disabled in the Template  
record, it doesn't work. The pagenotfound handling part of the  
localconf.php is the string READFILE:fileadmin/templates/404.shtml, with a  
file in that directory.
.htaccess file with and without ErrorDocument stuff doesn't work, and  
neither did the 404[..] extension. It never went to the file I specified,  
and didn't work most of the time.
What am I doing wrong? I just want 404's.....

Thanks!

Christoph