No New System Restore Check Points

Hello,
My computer has quit making new system resore check points. I have checked all the setting and looked at the registry to see if anything is out of place. System restore is enabled, there is plenty of disk space availabe. It is set to be able to use up to 12%. It just does not make the checkpoints. I am able to make them on my own but that is not something I want to do everyday. Is there any way i can fix this without performing a system restore back to the time when the computer wasnt having this probelm. (I dont want to do that because I have installed some new palm pilot software and a couple games that I dont want to reinstall.) Thanks for your help...