I'm very baffled by the issues with my games freezing up, and I've got no idea what to do at this point, having given great effort toward a resolution. I am running my backups on a 750GB Western Digital Caviar Green drive (WD7500ACS) in a WD MyBook enclosure. At first, it was NTFS, but after seeing freeze-ups and increasingly frequent problems, I switched to WBFS. I've finally become fed up as the problems were still continuing, so today I ran wbfs2fat on the drive and did an 'in-place' file system conversion to FAT32. I have been using USB Loader GX the whole time. I fired up the Wii and tested three games after the FAT32 switch. First game ran for about 15 minutes, then froze. I rebooted everything, tested another game, it ran for a little under 10 minutes. Then I tried New SMB Wii, got into the world map, moved one spot on the map and got a black screen. So I have no idea what's wrong, any help is appreciated.