Note to Self : Do not do updates with 22 miners running. I believe this is the source of the problems I have had.
Disconnect miners, update, reboot, restart mining.
Seems sooo obvious now lol@me.
This might not be a problem with fewer miners.
Am gonna start again with this n mind tomorrow.

Are you talking about MinePeon update or Arch Linux update? I never had problems with MinePeon but I always destroy the SD when trying to update the OS.