“Previous entries” not working

Upgraded to 2.3 a while ago, and just noticed that the “Previous entries” link at the bottom of my home page doesn’t work. The previous entries link is to:

http://freegeographytools.com/page/2

In IE, I get “This program cannot display the webpage”; in Firefox, I get, “The page isn’t redirecting properly. Firefox has detected that the server is redirecting the request for this address in a way that will never complete.”

If I try to go to:

http://freegeographytools.com/page/1

then it comes up with the home page.

This is also a problem with the category pages as well. It used to work under 2.2, but I can’t be sure that it was the 2.3 upgrade that caused this problem.

Any ideas?