I'm glad someone else has this issue, not to hijack this thread but I will say I had problems receiving texts as well and so I switched to handcent. This did nothing to fix the problem, so I assume it is in the way the system, either designed by Sprint or Samsung, handles mms messages. My experience has been overall patchiness, sometimes receiving texts, sometimes not. On multiple occassions, I have gotten texts that were around 3 hours late, which is a bit of a nuissance lol. Froyo has only partially fixed this, but it could be a multitude of problems. Could be Mms.apk, could be the phone, the network, the individual towers, the location in relation to the towers (I live inside some pretty thick walls, so signal is a bit spotty), or any number of other problems. I can live with it, it's just an example of poor quality. And based off of the fact that you are the only person I have ever come across with this issue, I don't think it is widespread.