Ubuntu Network Connections

For quite some time now, I would arrive at work, connect my laptop to my Ethernet cable, and wait for Ubuntu to establish the network connection. Within a few seconds, the connection is good to go and I can start reading email, etc. But a few seconds later, I see that my network connection is trying to connect.

I'm still able to do stuff over the Internet so my Ethernet connection is fine, it is trying to connect to a wireless connection. Little did I know, I just needed to un-check connect automatically for the network in question.

But even if it is checked, should it still try to connect to a wireless network even the Ethernet connection is running perfectly fine?