Mine is. At first blush, I thought it had been fixed. The large circle that pinpoints your area was shrinking down quickly, so it looked like the lock was coming quicker. But now I've noticed that many times it shrinks down to the small area, but it's the wrong location. Then it'll bounce around a couple of times until it finally rests on your correct location. With Froyo, it might take two minutes to get a lock, but it was usually accurate. Now when I get a "lock" most of the time it's wrong - many times horribly wrong. In Manhattan, I can understand that tall buildings can mess it up; but sometimes I'll be in a parking lot with no tall buildings around, and my location will "lock" in six blocks away. Today I did a walk in a suburban area that I've been to before. No tall buildings, etc. At one point I was higher than everything else. The large circle appeared and showed the area properly. When it zoomed in, it jumped ten miles away, and stayed there. As I walked, nothing changed on the phone - still ten miles off. I exited out of Maps and opened it up again. Still ten miles off. I rebooted and when I started Maps again, it got the general area right but didn't lock on to to the proper area (by this time I was by an athletic field with NOTHING around), it showed me - stationary - several blocks away. I exited out of Maps and went back in, my correct location showed up again, except the arrow was pointed in the wrong direction for quite some time.
Has anyone who had a GPS problem before had it resolved by the update? BTW, by data connections seem to be much better, and battery life is slightly better.