Originally Posted by pupkact
In my hunting around the interwebs, I have seen it on all carriers so I doubt it is a carrier issue. Many reported (as chall80 did above) that the carrier shows only a single message has passed through their servers. I think the issue is with the skinned ROMs (Sense, Touchwiz, Blur) that implement a unified messaging tool or a customized messaging app.
I have seen the iPhone problem, but my understanding is that it uses a different messaging system.
Its really the craziest thing. It never happened on my inspire. I was running Sense 3.0(same as what Vivid runs stock), but i guess its not a fair comparison as the inspire was rooted running a custom ROM. I really wasn't wanting to root the Vivid just yet. I like Sense 3.0...the only advantage to rooting would be to use my mobile hotspot without being charged half a million dollars. I may have to root and see if I can get it to go away.