Archives by Month returns 404 error

Greetings to everybody, I have a serious problem with Archives on my site. Every single Archive by Month returns 404 error page, everything else is working good on site.

WordPress version is 2.2.3

I use this to list Archives:
<?php get_archives('monthly', '', 'html', '', '', false); ?>

My permalink structure is this:
/%category%/%day%/%monthnum%/%year%/%postname%/

And this is content of my .htaccess file:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

To make example: When I click on Archive – August 2006, link looks like this:
mydomain.com/08/2006/
But the page is 404 error not found. And the same thing is happening with all other Archives by month. I really cant find solution for this, I tried everything… Can somebody help my to solve the problem?

Thank you for your time, best wishes to you all.