On iMac G3 Indigo 500MHz, I noticed that the icon to Network Utility is missing. It is running 10.4.11. I tried to replace the icon with ones on the internet, but I always get a white or black background on the icon. I am 100% sure these icons have a transparent layer. I even took the Network Utility icon from one of my newer Macs and tried replacing it, but it didn't appear translucent. I would like to get you guys input on what could be the cause of this strange problem. If the problem doesn't get solved, it isn't a big issue, as Network Utility still works fine. Any ideas are welcome. Thank You!