My D70 has been giving me some issues lately. I was gonna borrow my moms D300, just to see if it was just me, or the camera.
I think I just need to get a better tripod, and start to slow things down a little more, to get some better low light shots. I've been told to start playing with the white balance to get the colors in the sky to pop more. Sometimes, I'm impatient with this stuff.