Ok, I jailbroke my 3G iphone and its seems to be working fine so far. I downloaded Mame 5.5 (arcade emulator) and transfered my old roms from my PC on the portable hard drive onto my mac and transferred them over to the rom directory on Mame as directed. It is my understanding that this isn't a PC & Mac compatibility issue. However when I try to open Mame, its just a black screen then it returns to the home screen. Is this a compatibility issue with 5.5 where it only works with version 2.2x? If so, I'm not going to resort back to the old OS for this and just wait for 5.6 to be released. Anyone else have this happen or is there something I'm doing wrong here? 