The Singles I have work properly with their stock hardware ... I've been making hardware mods which take them closer to their limits, so I've experienced the odd lockup and have seen cgminer's response to that. 2.3.6 behaved differently than 2.4.1, which is essentially all I'm trying to say. I can work with either one but, given a choice, I'd prefer 2.3.6's behavior under this condition (which was simply to stop execution and exit).

Automatic recovery would be welcome, though it may not address all possible error conditions. An external software watchdog polling the API would likely be more robust and there is already at least one solution in that vein.