Motorola ROKR Z6m

hey I just got my phone last Friday and noticed that yes, my phone is doing the exact same thing!!!! I must've "sent" at least half a dozen messages before I realized none of them sent!!! did you get any resolution on this?? I am surprised no one else has come forward with a problem like ours. I do admit I am a really heavy texter and when I first got the phone I sent out at least 50 messages in a row with my new number. I wonder if that has any relevance as to why we are having this "sending in progress" problem. it's really annoying!!!!