Greetings! I have installed Xcode on a variety of Macs in the past (I've been using it since Xcode 1.0, in fact). I've done this dozens of times in the past, and I've never had trouble installing or using Xcode, or using gcc from the terminal prompt (which is my usual method of programming). This weekend, I tried to install Xcode 2.4.1 on my wife's iBook 1.42 GHz (1.5 GB of RAM, 100 GB hard drive). It had plenty of room for the install, but the install died a couple of times in the middle. I was persistent, and about the 3rd time I tried installing, it finally worked. I am able to use Xcode to compile C++ programs within the Xcode program itself (hooray!). Unfortunately, I usually write programs using "gcc" at the command prompt. I know where "gcc" is in the UNIX file system, and I've run it directly from the prompt many times, but it fails on my wife's iBook. Strange, since Xcode itself works! I can't even load the UNIX "man" page for "gcc", so I know that something about "gcc" is installed incorrectly. Any advice here?