Cingular couldn't help me with my problem, so I'm sending it to the real experts.

I have a problem sending and receiving MMS messages. When someone sends me MMS, it takes several days for my phone to receive it. In addition, it also takes several days for my MMS to be received on other people's phone. Sometimes, I wonder if some of those messages are simply lost in the network.

Do any of you have any clue as to how to remedy this problem, or what could be causing the extreme delay? Thanks.