Downstream error do look bad, but you cannot tell when they happened as the log is accumulative since the hub was last turned on. So please power off the hub for 5 minutes and then turn on. After two hours take a new full set of stats and post them. We can then see if they are recent errors and if they are still happening.
Tudor There are 10 types of people: those who understand binary and those who don't and F people out of 10 who do not understand hexadecimal c1a2a285948293859940d9a49385a2