install the power control widget that came with your phone. Just kill it completely and just use cell triangulation until you NEED to use the full gps function.
Good question. I don't know off the top of my head but you might want to go to Settings->Applications and see what apps (Manage applications and filter to show running) and services (Running services) are running on your device.How do I figure out which app is eating my gps cycles?
I leave mine on all the time. GPS is only going to affect battery when it is actively used. If an app is tying up the receiver then definitely address the problem rather than just the symptom.i agree completely just turn GPS off while your not using it. youll notice a significant increase in battery life too..