My LAN connection on my laptop keeps getting disconnected, and I get a message that says a cable is unplugged, when both ends are actually securely connected.  Its the weekend and a holiday, so no one from my school's computer center is available to come check my ethernet drop, but I was wondering if it is possible that my ethernet jack in the back of my laptop is coming loose; is there some way I can check this?  Or any other suggestions?  Thanks!