New Products Not Showing in Category Product Listing

Hello All,

When I add new products from the category product listing page, they show up on my website on both the product list and product detail pages just fine, but they do not show up in the product list on the category product list page (you know, the page in the admin area where you add new products).

In other words, all of the other products show in the list, but not the new ones. I have added over 2,000 products and this has just started to happen.

This happens to all new products in all categories.
When I look at the database through phpMyadmin, the new products are there. I made sure that all of the settings in other columns in the database are identical to the products that DO show up in the category product list.

I recently installed the Printable price list and have been making modifications to the Advanced Search pages. Perhaps this has something to do with it.

I am hoping that someone else has had this problem and can throw me a few breadcrumbs.

thanks

Bill