To all those people having problems playing Guilty Gear AC & Guilty Gear AC+ on 80 GB PS3s. If you're having problems getting the game to boot - try activating Progressive Scan Mode while the game boots (Hold Triangle and Cross while the Playstation 2 logo is being displayed) - this option works even if you have the PS1/PS2 game scaling option turned on the PS3. This should work on the PS2 version of both games while being played on PS3s that use software emulation (Mainly 80GB PS3 - I'm using a 80GB PS3 that shipped with Metal Gear Solid 4)
Peter Falken