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Disable the 10.5 X11 Warning-on-quit Dialog

One of the less-widely-used programs included with OS X, as an optional install, is X11, Apple's implementation of the X Window System. Using X11, you can run programs that haven't been ported to run natively on OS X--programs like GIMP, a free alternative to image editors such as Photoshop. Without X11, you can't run GIMP. (The easiest way to use GIMP on OS X is to use an installer, such as those available on Wilber loves Apple. Each package has an installation help page as well (ie 10.5.2) to guide you through the process.)

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