I've had my Curve since last June, but over the last couple of weeks, usually in the morning, when I start getting IMs, I've noticed something weird. There are two contacts on my list that I typically keep conversations open with. Sometimes, when I get an IM, the conversation and contact will turn yellow as normal, but I can't see what the new IM is. I have to close the conversation and reopen it and ask them to send the IM again. As I said, this has only started happening in the last couple weeks. I'm with Verizon.