I have a Dell Inspiron E1705/9400 running Kalyway Leopard 10.5.2. Recently, Bonjour stopped working properly. My Time Capsule stopped showing up. I had to manually tell Finder to look for afp://10.0.1.1 and put in the password. In the AirPort Utility I had to go into File>Configure Other, type in the IP and password.
I restarted Bonjour using "sudo launchctl unload /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist" & "sudo launchctl load /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist". I deleted com.apple.airport.airportutility.plist . It showed up in Finder by default and in Airport Utility automatically. I restart and it stops again. I have to do it again and again and again. Also, if there is no way to fix it, how can I make a file that I can set to run at startup without me entering my pass and then it automatically closes Terminal? I need it to unload and then load bonjour, Delete com.apple.airport.airportutility.plist, and then close Terminal (I mean Quit, not just close).
