I ahve a question about this KB article
in ePO, I purge any machine that hasn't checked in for over 30 days..
so, would I correct in believing that if a machine was affected by this issue and stopped talking to ePO for 30 days, that on day 31, it would be able to automatically register, as a new machine, with ePO?
In theory, that's correct - I assume you're talking about an inactive agent maintenance task? If so then this should remove the entry from the DB, so the next time it communicates it'll be treated as a new machine.