older Archives doesn't work

Hi,

I am having an issue with my blog. Going to the Home Page and selecting the older archives return “page not found” error.

For example http://mkreder.com/2008/02/26/primer-post/ works but http://mkreder.com/2008/02/ doesn’t.

However, http://es.mkreder.com/2011/06/ works. Not sure how to make WordPress reindex them if that is the issue.

Thanks
Matias Kreder