I am trying to simply go into my data frame properties and ArcMap fails to let me do that unless if I'm in a blank document. I am not working with a lot of data so I am really confused on why this is happening. Every time I try it says it's not responding. Please anyone help me, ESRI says I don't pay them enough money for technical support.
First try to delete the Normal.mxt:
Delete or Rename: Normal.mxt
Open your project and try again.