I am using version 1.5.8a. No plugin's, its a fresh install.

I can login to admin. I point to Configuration, then click on any link down the list and I go nowhere, I stay on the home page.

If I point to Catalog, and choose a link form the list, it works as does all the other tabs and links. It's just Configuration and the links under Configuration all go nowhere.

There aren't any Log files to look at.

Any idea what is wrong?