I activated the "Find my Phone" on my 3G and can access it in mobile me. I know from the keynote that they said even if the phone is silent that it will ring the phone with a special tone. Indeed this does work. However, there is one case where I see that does not work great. The loudness of the pinging tone seems to be dependent on the ringer volume. Too me this is a bug. Shouldn't the notification override the ringer volume and have the pinging tone emit at max volume so you could hear it? Can someone else test and confirm this?