Archive "by month" links broken

[3lite]

The archive "by month" links are broken.
If go to http://kiptip.com/archives/ and click on "January 2009" it tries to open http://kiptip.com/01/2009/
404 error... :(

Here is my .htacess file:

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

# END WordPress

RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://kiptip.com/.*$      [NC]
RewriteCond %{HTTP_REFERER} !^http://kiptip.com$      [NC]
RewriteCond %{HTTP_REFERER} !^http://www.kiptip.com/.*$      [NC]
RewriteCond %{HTTP_REFERER} !^http://www.kiptip.com$      [NC]
RewriteRule .*\.(jpg|jpeg|gif|png|bmp)$ http://kiptip.com [R,NC]

Custom Structure: /%category%/%monthnum%/%day%/%year%/%postname%
Category base: category
Tag base: tags
Archives page: http://kiptip.com/archives/

Any ideas?

Thanks!