I just picked up a Mini for my mom this weekend and noticed the power cord is loose. The plug doesn't sit flush on the back of the Mini and you can actually move it in and out without unplugging it. There is a noticable gap where the power cord stops and the back the of Mini. Are they all like this or did I get a bad one? It works, but I am concerned with how it looks since it looks like the plug should be a flush fit.