I'm running 10.4.11 with all updates applied. I'm using Xilisoft DVD Copy to create DVD ISO images from movie discs that I have here. If I double-click on any of these ISO images in finder, the OS instantly crashes. I get that grey box in the middle of the screen that says I need to power down and reboot. These ISO images are all good, I can burn them using several different disc burning programs and end up with a valid DVD movie disc so I know they aren't corrupt. FYI the default application to open ISO's is the Apple Disk Mounter utility, so I assume that's what it's using when I double click on one of them. FWIW, I saw this exact same behavior on my old iBook so I know it's not isolated and not a problem specific to my machine. Anyone else seeing this behavior on 10.4? How about with 10.5? Does Apple have any mechanism for bug reporting?