Is this something that occurred after you updated to IOS5? If it is, After I updated mine, it added some new apps (like 4) to my second screen. I just kept flipping to the next screens and my apps were there. I just had to rearrange them.
Thanks for all of your help. I got it sorted. The problem occurred from a combination of restoring to a new phone and updating to iOS 5 back to back. Every app I ever owned was put on my phone. Some judicious deleting and sorting, and following your advice made a difference. You are all my heroes! Thanks!