I just finished upgrading from my C-7 to the C-8 a few moments ago. During the setup process, I noticed that my network was showing that the C-8 was only connected at FE (meaning 100MB connection) where my C-7 shows GBE (meaning 1,000MB / 1GB connection).
I thought it was just a cable I was using to setup the C-8. After the hub was successfully restored from the cloud backup from the C-7, I shutdown the device then placed it in the same spot where the C-7 was (using the same network cable from the C-7) and after the C-8 booted up, I noticed that it was still reporting FE (a 100 MB connection).
Maybe this is just a fluke and in a few hours it will restore itself or what not but... if it doesn't the question remains... was the network port was downgraded from 1GB to 100MB?
UPDATE: After about 25 minutes, it's now reporting at 1GB. .:wipes head:.