I found it out.
I changed the scratch disk to my terrabyte drive. Question. I origanlly had a terrabyte drive and the connection board was busted, so I took the drive apart and made four 250 gig drives. I was using one as the scratch disk when this all happened. In my reading of the maual for FCp it said that I should try a new drive and i did. That was the the drive i was using pior to this project.
My question is why would it drop frames on the spit up terra drive?