The GDS broadcaster had frozen up Saturday morning, it required a front panel RESET button switch to reboot it.
This is a gentoo machine which had been up for 211+ days, and so froze due to the 208.5day-bug.
Reviewing the other 2.6.35 DAQ machines, h1tw1 has been running for 266days, so could crash at any time. I'm scheduling a reboot of this machine for tomorrow's maintenance. All other machines are well within the 208.5 limit.