Whenever I click on any of the 1.categories 2. "previous entries" 3. About 4. and various other spots (but not including the links, which I entered manually), I get a 404 error, saying the link is bad. These links are created automatically, I think, when I set up my wordpress blog. I'm thinking that somehow the links are bad, but I don't know how to fix it. I've tried changing themes, but that may have little to do with the problem and didn't help anyway.
I appreciate any comments or help.