Curious about what programs have been updated for Leopard? Look inside for a list of the important or interesting programs that specifically claim Leopard compatibility.

Apple has released Security Update 2007-009 1.1 to patch 41 vulnerabilities in Mac OS X 10.4.11 and 10.5.1, some of which are rather serious. We recommend installing this update soon!

You know there's something really clumsy and annoying about Open and Save dialogs, but you can't quite say what it is. Right? Right??? Well, Default Folder X shows you what it is - by fixing it.

If you've been shy of upgrading to Mac OS X 10.5 Leopard, the 1.1 version of Joe Kissell's "Take Control of Upgrading to Leopard" now has even more detail to help ensure a smooth upgrade.

Is Back to My Mac not working among your Leopard systems? Apple advises patience, please, as they work to improve the service.

I have made the mistake on previous releases of Mac OS X, other operating systems, and even software applications of upgrading immediately on a "dot zero" (.0) release, something I typically advise others to avoid

An option in Leopard - literally - lets you get a quick glimpse of your Wi-Fi network connection's speed, signal strength, and other details. And another hidden bit of interface goodness reveals signal strength and encryption method for other nearby networks.

First the Dock lost its silly reflectiveness, then we blocked the menu bar's transparency. Now a new utility, Quay, lets you replace Stacks in the Leopard Dock with folders that have hierarchical menus - just like on, uh, Tiger, Panther, and every iteration of Mac OS X. Except Leopard. Except that Quay's hierarchical menus are cooler.

Back to My Mac can work with a little firewall configuration help, and Apple's provided some more detail that we explain how to use. Also, Apple confesses Back to My Mac's security weaknesses - at either end of the connection, not in the middle.

The transparent menu bar has fallen, a victim of hackers' ingenuity. Users, rejoice!

Frustrated by how Spaces uses meaningless document icons in the Dock? Rich Mogull points you to the solution.

Apple releases Mac OS X 10.5.1, the first update to Leopard, and fixes problems with Back to My Mac, Mail, and Finder data loss when moving files among partitions and networked volumes. It also makes one cosmetic change to the application firewall while fixing a problem that bit Skype users and adding more security.

The question of whether Safari 3 would be released for Tiger is answered: yes. Apple pushed out Mac OS X 10.4.11, which fixes a huge list of bugs and security flaws along with the enhanced Web browser.

With PGP installed, upgrading to Leopard can produce hard-to-pinpoint slowdowns, as I saw with a beta of email program Mailsmith. But uninstalling the software or upgrading to a Leopard-compatible beta solves the problem.

Apple touted Leopard's firewall as an improvement over Tiger, but security consultant Rich Mogull found significant problems with how it works and makes some suggestions for better security.