[Freesurfer] recon-all taking a really long time

Hi,

I have been running a surface reconstruction for over 19 days now, and it is still in the process of correcting defects. Based on how long it took to do one hemisphere (it is now on the second) it appears it will be done hopefully within 3 days. I have been concurrently running other subjects on the same quadcore machine, using 3 of the 4 processors to perform the recons, and they have been finishing in a normal amount of time. Has anyone else had a brain take this long to run? Should I suspect that something is wrong with the inputted dicom files? Are manual edits necessary to fix some of the defects to speed up the process?

Thanks for your answers!

Jonathan