While some of this is probably because of it being new software and not every app has been updated for it, but certain apps have been crashing on launch, or with in moments of using it. And using some games have made the game it self very laggy, where as it was fine on 3.0 examples being sonic, and madden 2010. Many of the other tasks on the phone seem quite snappy though. I do have the GM version, but the build is apparently the same. thanks guys, maybe someone could shed some light.