Hey man!

I think i know what you're having with your LauncherPRo FC'ng, possibly it was the same thing that was going with me too when i first installed it, and Data Reset? what do you mean? Like, is it when you gotta input all your information once again after you Poke the LIl green android when you first bootup your phone? then yep i've gotten this too, but about the FC'ng LauncherPro
Unistall it( if you already have done so) go to the market, search Home Switcher for Froyo, install, then LauncherPro install it as well

.
Open HomeSwitcher and delete all defaults then Choose LauncherPro
now after this you're welcome to restart the phone,and no more FC'ng LauncherPro
thats the only way i resolved this problem i was having with it,and if the Data Reset is how i think i explained it above, then that will also not happen if you follow this direction.
I don't see why it FC's but This will resolve the problem you got it with.