I would still lay money that no-one just up and decided ground
control suddenly needed changing after like...20 years.

That said, the mysterious "lag bug" that appears to exist (assuming
undoctored logs, then yes there's weird stuff happening), but has
been unable to be reproduced reliably to be able to bug check, and
therefore I don't think anything was ever tracked down may certainly
be a culprit.


Biggest thing that's always super useful is some method to reliably
reproduce the occurrences, therefore pinpointing the cause of the
problem. I know myself (and others) have spent time trying to
contemplate and test possible commonalities, but had little luck.