specific word first in a blog post title/permalink causes 404

This is a very specific issue….one specific word in a blog post title/permalink in first position only cause 404 not found and posts in same word category to not list.

In the site @ http://www.sitename.com If I create a blog post that begins with “bcca” (no quotes) the page will 404 not found.

Example: http://www.sitename.com/bcca-has-a-new-post/

In the backend and database the title shows correctly as “BCCA has a new post” and the permalink shows correctly as /bcca-has-a-new-post/ but the live link removes the BCCA so it becomes http://www.sitename.com/-has-a-new-post/ and results in 404 not found.

If I put the BCCA at the end it works. Example: http://www.bcchiro.com/a-new-post-by-bcca/ That will work.

First I thought it may be because BCCA is also one of the category name/slug. Nope. I tried to repeat the error with using another category names as first word in title and permalink of a post and they all worked correctly.

It also doesn’t matter if the post is assigned to the BCCA category or not.

next I found that when I clicked on the category name of BCCA below the live post which had 10 posts in it nothing would come up. The page would refresh with header, footer and sidebar but no listing of posts. The other post categories worked.

So I just changed the BCCA category name and slug to something else and that worked.

I tried again after changing the category name, flushing the cache, and with a new post beginning with BCCA and same result. 404.

Anyone want to hazard a guess? I haven’t got a clue why that one word only would cause a problem.