WP suggests same htaccess for diff permalink types! Bug??

Independent on my permalink choice, WordPress always suggests the same htaccess configuration:

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

# END WordPress

I would like to have this permalink: /%year%/%monthnum%/%day%/%postname%/

Didn’t this need a htaccess like???
RewriteRule ^archives/([0-9]{4})?/?([0-9]{1,2})?/?([0-9]{1,2})?/?([_0-9a-z-]+)?/?([0-9]+)?/?$ /blog/index.php?year=$1&monthnum=$2&day=$3&name=$4&page=$5 [QSA]

I’m running WP 2.3.1 on apache…