Originally Posted by ItsJustMe

Well, you need to do something. That is NOT normal. Unless some kids are sneaking up and kicking the crap out of your rear wheel occasionally, there's something wrong with the wheel.

As I said, I built myself a new wheel, it was my first build. I followed Sheldon Brown's instructions, and the wheel now has about 3000 miles on it with no problems, I haven't had to touch it. I reused the hub, and my total cost was about $40. The factory wheel was breaking spokes weekly. So if you get someone who actually knows what they're doing build a wheel for you, you should be golden.