I haven't had many crash issues. It has worked rather smoothly; however, I am having volume issues with 3rd party apps like Angry Birds Star Wars and a couple of children's games. To basically put it, there is no audio when I go to play the games. The music app works fine and I get audio. I haven't seen anything on the discussion boards, but has anyone else had this issue or have a remedy?
What you are describing sounds like you have the audio mute button turned on. Some applications -- usually ones showing audio and video disregard how the button is set -- they assume you want to listen to music/video and everything else (alerts, beeps, etc) will be muted.
Games are supposed to follow the button setting. So you can play a game and mute the sound by sliding the switch.