Take it into the Apple store. Ports shouldn't become loose.
Right, but the way that Thunderbolt is designed puts the wear components on the peripheral-side of things. So, while the Mac might be fine, the peripheral eventually loses contact.
I wasn't sure if this was warrantiable or not.
I've owned MacBooks for two to three years and even my PC (which I've owned for more than 3 years), and have never had USB ports come loose, therefore Thunderbolt ports shouldn't become loose that easily either.
OK, I'm not sure if you're reading what I posted. But thank you for your thoughts.
Ah sorry, I take it that it's the actual ethernet adapter's connection that is coming loose?
According to a few resources, the Thunderbolt Ethernet Adapter does seem to be covered under a 1 year warranty.
The adapter is where the spring elements appear to be, so I would assume that is the wear element and therefore the problem.