UCI Housing Network and Cable TV Issues

As I mentioned earlier, Resnet has started updating the network infrastructure in on-campus housing.
One of the touted improvements is supposed to be a faster speed:

The new switches will increase port speeds from 10Mbps to 100Mbps

So, yesterday was the big day of upgrade at my place. But alas, while there was a speed increase for a short time, they went back to the old 10Mbps speed, as the logs from my Linux box show:

bcm5700: eth0 NIC Link is Down
bcm5700: eth0 NIC Link is Up, 100 Mbps full duplex
bcm5700: eth0 NIC Link is Down
bcm5700: eth0 NIC Link is Up, 10 Mbps full duplex
bcm5700: eth0 NIC Link is Down
bcm5700: eth0 NIC Link is Up, 10 Mbps half duplex

I got a new IP address, but other than that, everything is as slow as always. Not much of an "upgrade"...
I do know that the wiring to the box is not CAT5, so it is probably the wiring that needs to be updated to get the faster speed.