Thank you, Balint, but your solution doesn't work correctly. Today I did a search back for 7 days
and this is one of the results:
The 04th of may is more than three weeks in the past, not just seven days... I don't know why the MOD shows this post. (I have the same problem with other posts, too.)
On the other hand the MOD does not
show posts I wrote on 28.04.2008.
Last bad news for today: I can confirm the bug jmjm003 reported
(If you need a German translation of this post, just let me know.