It is funnie yahoo says it is not there promblem but if ask palm, and sprint it is a yahoo promblem ERROR 500?

So maybe yahoo will answer this post, or maybe they will fix the promblem. I can't sign in on my phone but if I use my wife's account I can. I get ERROR 500 on palm centro, so please fix the promblem, I would ask there tech's but from what I understand I have free account, and they can't help me.