[mythtv-users] HD-PVR strangeness and "new high-speed USB device" messages

[Bob]

Greetings,

My HD-PVR was behaving strangely. Many recordings failed. I would cycle 
power on the HD-PVR and the device file would not disappear as it did in 
the past. I had to leave it powered off during the reboot, then it began 
to work.

I did replace the power supply 2 years ago, maybe it's time again?

I am also getting these messages in my "message" log, around every 10 
seconds:

2015-09-13T21:09:41.103545-07:00 mythtv kernel: [  848.700568] usb 
4-1.4: new high-speed USB device number 112 using ehci-pci
2015-09-13T21:09:51.343622-07:00 mythtv kernel: [  858.952177] usb 
4-1.4: new high-speed USB device number 29 using ehci-pci
2015-09-13T21:09:54.416875-07:00 mythtv kernel: [  862.029076] usb 
4-1.4: new high-speed USB device number 41 using ehci-pci
2015-09-13T21:10:01.583544-07:00 mythtv kernel: [  869.203806] usb 
4-1.4: new high-speed USB device number 69 using ehci-pci
2015-09-13T21:10:08.753532-07:00 mythtv kernel: [  876.382093] usb 
4-1.4: new high-speed USB device number 97 using ehci-pci
2015-09-13T21:10:10.033538-07:00 mythtv kernel: [  877.663556] usb 
4-1.4: new high-speed USB device number 102 using ehci-pci

I do have an iMon VFD on the system, could these messages be due to 
clock updates, recording messages, etc?