[Freesurfer] different vertexes and faces on pial and inflated surface of the same hemisphere

hi all,

I encountered a strange problem today. I used

recon-all -all

to get surfaces of a subject. I have no problem with his/her left hemisphere. But for the right hemisphere, the numbers of vertexes and faces of pial surface are different from those of the inflated surface. I checked the headers of curavture and convexity maps also. They all tell the same information as the pial surface's header. But not the same as the header of inflated surface. I also checked the file content. The file did not seem like corrupted.

I have never had the problem with other data i have. Only on this hemisphere of the subject.

Has anyone out there experienced the same problem before?

Cheers, Forrest