No problems, with the exception of some missing music, but that's my own fault. The one weird thing is that the mute switch seems...heftier(?) than the 3G, so I can switch it one way with my thumb, but switching back requires me to take it out of my pocket and use some force on it.
Also, as a rule of thumb, people with issues are MUCH more vocal than those without. Enjoy your phone OP, I am.