Category links changed

Hi

I’m here: http://www.cultedge.com

It seems that since last night my category links changed apparently without me doing nothing (at least that I can remember).

All my category links are now including the word “category”: http://www.cultedge.com/category/a-brand-trident/

However, the fact is that the category attributed while posting is sent to: http://www.cultedge.com/culture/

(without the word category included in the URL).

Am I missing something?

Thanks very much.