Here are some of my test results:
Wii with bootmii/boot2, hacked using Softmod Any Wii on Wiihacks, 4.1u, 320gb Transcend Hard Drive.
Using USB Loader GX r1191, Dios Mios 2.0 Revision 1
*Did not upgrade to r2 as seen reports of people having problems. All games were tested with gamecube disc in drive, no memory card inserted, did not use NMM. I first installed BC v6 to make sure I had the right one, followed by the DIOS MIOS wad. Each game was played for just a few minutes.
WORKING
Bomberman Generations - Perfect
Kirby Air Ride - Perfect
Mario Kart DD - Perfect
Mario Party 5 - Perfect
Mario Party 7 - Perfect: Did not have a mic in.
Mario Superstar Baseball - Perfect: Wiki for DML says it freezes but I couldn't get it to freeze.
Mario Golf - Perfect
Mario Party 4 - Perfect
Mario Power Tennis - Perfect
Sega Soccer Slam - Gameplay Perfect: I was particularly excited about this one as the Wiki for DML says it blackscreens. I was able to play a game with no black screen. I could not do the R+Z+Start combo to reset the console with this game.
Shadow the Hedgehog - Perfect
Soul Calibur II - Perfect
StarFox Assault - Perfect
Super Mario Sunshine - Perfect: The videos seemed to MAYBE have been a bit pixelated. Can't remember if thats how the game actually was.
Super Smash Bros Melee - Perfect
Zelda 4 Swords - Perfect
NOT WORKING
007 Nightfire: The DML wiki says a black screen after hitting start. I hit start and it went through the whole tutorial so I got excited! Then at the end when you EMP the truck it cuts to a video of Bond looking at fireworks with the girl. I hit A to skip it and it freezes, then I get the message about an error occuring and to see the gamecube manual. This game was ripped with a retail disc using USB Loader GX.
So overall, WOW THANK YOU Crediar, Fix94, and Cyan (for GX mod). DIOS MIOS is so great! I've been waiting for a long time for a good GC USB solution. This is a fantastic App and I look forward to more updates. By the way, I can launch retail discs from the disc channel. The DIOS MIOS logo pops up and the game loads. Ran Nightfire with retail disc just to make sure and it runs fine.