There was a slight question about the camera glass spontaneously shattering soon after launch, but it seems to be a very small number of cases, most of which questionable to the "spontaneous" claim (I.e. You can make out an impact point). In either case, it blew over rather quick and I haven't heard of any continuing issues about it. Now it seems the widest spread issue is screen retention of static images. It's not a permanent burn in, as it does go away when you turn the screen off for a while.
Otherwise it's a very solid and well performing phone. I do have the screen retention issue on mine, but I'd still recommend it over most anything out there today. The retention is only a minor annoyance, and it packs more features than most other phones.