Sent my 4 machines back to hosting. Three set @ 725 MHZ are ceasing to hash randomly. I have remotely rebooted them. One was ceasing to hash so frequently I lowered it from 725 to 650. Now that one appears to be periodically resetting itself. I am running the Autofreq FW on all four. I think I may have heat issues. Any suggestions? I need these babies to stabilize.