I don't know about Linux. Every few months I get curious and install Linux just to see for myself all the improvements over OS X Linux fans tell me exist. And every time I have the same experience: Linux configures my monitor incorrectly, causing extremely low resolution and strange colors on my 17" screen, inability to rip and play basic formats out of the box, and overall slowness compared to OS X. The first two issues are relatively easy to fix, simply because I've done them so many times. Google up some xorg.conf code, copy and paste it in, restart X, and the monitor works. Install flac, add the other software repositories, install lame, reconfigure gstreamer, and the second is fixed. However, I don't think it's fixable that clicking Konquerer creates a 7 second delay in opening a window that is unresponsive for a good 4 seconds, or that when I move the mouse pointer, a window, or anything else, that the movement is extremely choppy. I'm sure there's some fix, but by that time I'm thinking, "Why did I go to all this trouble when I could just install OS X and have a working system in 15 minutes that automatically connects to my printers, camera, and iPod, and runs twice as fast with absolutely no work from me?" I don't know what your sister's computer's problem was, but my Mac as always "just worked."