Ethernet port problems?

My iBook of about two years has had it's ethernet port break twice. Apple considers this "misuse" and I had to pay about 800 bucks to have it fixed the first time (the second time i said screw it and got airport, so i still have a broken ethernet port). Does anyone else know if this is common? Also, I'm looking to buy a new powerbook and am trying to find a good warranty program that will cover this (screw AppleCare). Does anyone know of any. I think CompUSA covers it, but I have to look into that more. Thanks

 

It began wiggling and gradually got looser and looser through normal plugging and unplugging. I can't of one instance where it was pulled or jerked. The fact that it gradually got worse reaffirms to me that it wasn't due to any "misuse" but normal usage.