Hi, > Yeah, I think this should be tested and we shouldn't just blindly > trust David Z (no offense). I tested without the patch here and > loopback devices work exactly how they should: Double click on an ISO > in nautilus and the popup dialog should say "open with Boxes" rather > than "open with Files". Do you think I filed the bug report for fun? The udev rule is clearly wrong but since you don't trust me I won't waste time explaining why this is so and why it only works sometimes as, for example, in your testing. I can only conclude that you didn't do very careful testing. Anyway, good luck Zeeshan. David