oops i was wrong - It was VertRefresh all algong
I now know where the problem comes from and how to fix it. Puterguy, I'm guessing you are using an lcd monitor?
I realized that when I changed the NvAgp option I was using a backup XF86Config-4 where I had changed the vertrefresh.
So- I have to have VertRefresh set to 60 or I get lines. I just verified it several times, if i pute a range like 50-70 for vertrefresh I get lines. So far 60 is the only value that doesn't give my lines and I'm sticking with it. So the problem is with the VertRefresh. Test it with 60, or see if other people have posted specs for your particular screen and try those. Let me know!