404 error page errors?

Dear all, I don’t know if I’m being paranoid or discovered a real problem, but when I look in my BBClone statistics I see a lot of visitors who are browsing the website suddenly land on a 404-error page, after they visit succesfully some pages. The intern links across my website are correct, I checked and doublechecked it. I don’t get error-pages, but I find it odd that other people DO get them.

This is one of the areas that will fixed in the upcoming release. It’s definitely a bug.

temporarily, of course... I have done this
http://modxcms.com/forums/index.php/topic,2037.15.html

or on System configuration -> Site settings -> just enter nothing in Error page field. and 404 error will be handled by server.
but not all hosts do correct error reports, making a redirect to own site sometimes...

...and

Enter the ID of the document you want to send users to if they request a document which doesn’t actually exist. NOTE: make sure this ID you enter belongs to an existing document, and that it has been published!

...so this ID not belongs to a real page