i have been halo 2 recently on my xbox (older one) and all of a sudden it says i failed to load some maps, so i reset it expecting it to get better. When it booted back up it says "Please insert a blah blah blah valid disc". The disc has basically stayed i my xbox for the last 6 months so its not dirty or scratched. anyone know why its doing this?
thanks
thanks

might be able to hold on till xmas and hope santa brings me a nice shiny 360 