All the time. I have the 8gig card.. dont have much on it at all. Some typical apps such as myspace twitter aim pandora quick pull 2.0 and google latitude. For some reason this phone is just SLOW. Even when trying to load my own pictures a loading bar comes up and takes a few seconds. Yesterday I got a phone call and I went to hit answer and the phone just locked up. Sometimes the little clock icon or busy icon will stay on the screen for 3-4 minutes at a time. I have to do numerous battery pulls throughout the day cause of this.