Thanks. What did you replace it with? Does it speed up/smooth out the navigation? I've been reading up on how to achieve less lag on the screen. So far:
1) Display less POI on map (also remove 3D buildings)
2) Faster SD card (*may make a difference)
3) Ensure you have the latest software (*may make a difference)
Oh, for those with the annoying random screen start-ups I feel your pain. I'm going to record my actions to see if anything triggers this (using canbus, not shutting down radio before turning off ignition, etc...).