The Pixelmator image-editing app has been updated to version 3.1 (nicknamed Marble) with a couple of improvements aimed at the new Mac Pro. It adds support for 16-bit-per-channel images, and it’s able to utilize the Mac Pro’s dual graphics processors simultaneously to accelerate composition rendering for faster and more responsive performance (see this blog post for more). Pixelmator also adds MILK Print on Demand as its on-demand printing partner, enabling you to order prints (as well as notecards, posters, and more). The update also adds a bevy of layer styles improvements, brings back a number of effects (including Pointillize, Pixelize, Mandala, Concert, and more), improves the stability of the effects rope, improves support for RAW image files, ensures that text stays visible on grouped text layers that are duplicated, and banishes the “Low disk space” message when it’s clear that your computer has ample storage space. ($29.99 new from the Mac App Store, free update, 36.7 MB, release notes)
Wake On Demand in Snow Leopard
Putting your Mac to sleep saves power, but it also disrupts using your Mac as a file server, among other purposes. Wake on Demand in Snow Leopard works in conjunction with an Apple base station to continue announcing Bonjour services that the sleeping computer offers.
While the requirements for this feature are complex, eligible users can toggle this feature in the Energy Saver preference pane. It's labeled Wake on Network Access for computers that can be roused either via Wi-Fi or Ethernet; Wake on Ethernet Network Access or Wake on AirPort Network Access for wired- or wireless-only machines, respectively. Uncheck the box to disable this feature.