Duplicate Content Issues with WordPress

[DeliaAssociates]

I'm having some difficulty with a few of the sites I'm managing right now.  When I run a report here, I'm getting a duplicate content issue with sites that I'm running through WordPress.  Sites running on a different CMS are not getting the issue.  The duplicate content is being listed as from two URL's that are identical.  I checked trailing slash, spelling, capitalization, everything.  It looks like the same site is being marked as two with duplicate content.

Does anyone have any ideas of what could be causing this and/or what I may be able to do to resolve the issue (or if it's really something to worry about or not)?  Thanks.

(and thanks for helping the new guy!)

[CoreyNorthcutt]

Take a look at the WordPress plugin, ALL IN ONE SEO.  WordPress is notorious for this issue by default (blog index, archive index, category index, post itself will all conflict).  If the issue is between the articles itself, I posted a YouMoz yesterday that explains how a PHP-savvy person could use the levenshtein() function to identify which articles conflict in your database.