A very well-written article at CIO Today, linked from the title above. The author makes one of the first mentions I've heard in a trade journal of the security risks of Intel hardware, regardless of OS, and the benefits of switching to non-Intel (e.g., PowerPC) hardware, again regardless of OS. He also attempts to drive a stake through the heart of the "Macs are expensive" myth. The closing quote from the article:
In other words, if security concerns are your most important driver for desktop change, and Microsoft Office compatibility is your most significant barrier, then switching to Macs actually offers you the best of all possible worlds. Microsoft Office on Unix/Risc with a better GUI, longer product life, some cash savings and a performance bonus thrown in.