this is interesting since i downloaded the leaked version then it took forever for everything to download and load up definitely longer than usual but it is probably due to the file size. however after hearing the reports that the one i downloaded was intended for the iphone 3g i still dont feel the need to use the other firmware. mine currently works fine and the only difference that i believe could b seen with the firmwares is that when i use my "fake" gps on my 1st gen phone it almost does the gps of the 3g with the bounce and then zoom. also i get this different icon for when it connects to gms for internet. a blue square with a white circle.

but whatever everything works correctly including mail.app. is it that important to change to the other "real" firmware???