I am having the same issue and have had to call Cox three times today and they keep just having me run a speed test and telling me the modem is fine...I tried explaining the errors and event log and requested a technician, but keep getting the run around.
COX will never get back to you regarding this issue. I finally got a hold of a tech savy person that aggred to place a note to my complaint so that the I.T. people would address the problem of the wrong date and time in their equipment. Now that issue has been taken care of it is now the process of them every day setting the levels for download speed then upload speed. Its a balancing act to do this properly and the contractors do not have the big picture in mind when they just throw attenuators in line and connect your house to the wrong port. I pay for the 1 gig and 100 meg package and it is not being delivered as of yet, just have to be patient.
try replacing cable wires/splitters/barrel connectors, and see if that helps. Sometimes we get a bent cable wire, and that can cause all kinds of issues, causing the RF signal to get reflected backwards, and causing problems for all devices in the home.
