I have a plug installed in a new blog called Top Level Categories. What it does is it removes the prefix from the URL for a category. For instance, if your old category link was /category/catname it will now be /catname. This plugin is working properly in older blogs of mine but for some reason it is not working properly in this new one. I need somebody to fix it and let me know the reason it was not working (it may me a conflict with another plugin). The solution may be also the installation of another plugin which does the same job and works properly in the new blog.