Tony
I have given this a bit more thought today.
Firstly, I monitor the SNRM as I have a problem in the early hours with noise, with CRC in a pane below. Your great improvement showing the "gap" in this graph, made the lack of logging obvious, otherwise I might not have noticed. If "clystron" is not looking at SNRM it may not be obvious he has the same issue.
Secondly, I'm convinced this issue arose after the MS patches on Tuesday they involved a lot of security issues especially with SSL and certificates. I've already had some MS Exchange credential issues since, might it be that only 2 of us are using this weeks patches on windows boxes ?
Thirdly I have setup up two scheduled tasks now to avoid the "Lockout Period" 01:04 - 23:59 = 22:58:00 and 0001 - 0059 = 00:58:00. I'm happy to provide an xml file to import these if any one needs them. I trust you think my maths is correct here.
Finally, is the scale on the SNRM "x" axis different to all others as it appears so on my display ?
Hope this information is useful and I will confirm if the "Gap" between 00:59 and 01:04 stops the issue tomorrow (The gap between 00:59 and 00:01 was intentional to avoid task scheduler issues)
Tony