Something weird yesterday, the D3 has been flawless otherwise.
clicked on the camera Icon, the phone locked up. after about 5 minutes of waiting I held the power button for about 30 seconds and the phone started to reboot. thinking it would be a few minutes I put the phone down. checked again in about 40 minutes to find it hung at the boot animation. Had to do a battery pull.
I was using Launcher Pro, and it was installed automatically when I activated - I thought it was odd that i could not switch launchers, so I uninstalled LPP. So far so good, but I have to admit, I like the launcher Pro Plus features much better than the stock, but the stock is better than the other manufacturer UI's.
I will give this a try for a few days, if I get another hang like this I may need to return the D3, my Droid was stable albeit slow with a froyo ROM.