My Mogul's talk button also stopped working last week. I went into the nearest Sprint store with a tech department and, after about 10-15 minutes, told me it couln't be fixed. Then I was handed a brand new Mogul and was told my service was moved over already.
Overall, I thought it was a great experience....no line, pro-active service, a new replacement phone for $0. But now I just came across this thread and I'm bummed. Oh, well. Maybe this new Mogul will have some intermittent service/power issue and I'll try another service location.
