Looks like you somehow managed to activate "enable tray icon" even though that option is disabled on Mac OS X.
To fix this:
- quit aMule
- navigate in the Finder to "~/Library/Application Support/aMule" ("~" represents your home folder) and locate the file amule.conf
- open amule.conf in TextEdit and search for "tray". There should be two settings, make sure they both are set to zero:
MinToTray=0
EnableTrayIcon=0
- save the changes and quit TextEdit
- restart aMule -- voilĂ !
