I'm trying to install Skype (for mac latest version) on an ibook G4 (running 10.3.9). Should be compatible... It downloads okay. It drags to the applications folder okay. It won't launch, however. If you try and launch it nothing happens. The menu bar doesn't change. Other applications download okay and run okay - but not Skype. I've tried deleting it completely and then downloading it again about 4 times and same problem each time. I tried dragging a shortcut to the dock, too, but it won't launch from that either. Any ideas?