Set up Screen Sharing in Leopard

1. Go to System Preferences on the machine you want to share.
2. Click on the Sharing Preference Pane.
3. Check the box beside Screen Sharing.
4. Close the System Preferences widow if you wish.

To use Screen Sharing

1. On a different Mac using Leopard go to the Finder and create a New Window (Command N). A Finder window appears.
2. Look in the Sidebar for the name of the machine whose screen you want to view. Select that machine. The screenshot shows I’ve selected terra-firma, my Mac mini.
3. Click the Share Screen … button near the top of the Finder window. A Screen Sharing window appears displaying the screen on the machine you wish to control.

Here’s the how to for a password reset under Leopard.

1. Boot into single user mode (press Command-S at power on)
2. Type fsck -fy
3. Type mount -uw /
4. Type launchctl load /System/Library/LaunchDaemons/com.apple.DirectoryServices.plist
5. Type dscl . -passwd /Users/username password, replacing username with the targeted user and password with the desired password.
6. Reboot

This allows you to reset the password in single user mode without booting from the install media.

According to AppleInsider, the latest update of Leopard (10.5.3) should be available in less than a month.
It seems Apple released 3 betas in less than a week, the latest version appears to be clean, no bugs anymore, and it fixes more than 31 bugs, especially the Back to My Mac, Spaces, Time Machine and Airport.

Leopard’s Allow All Incoming Connections option is the functional equivalent of the old Stop button: it turns your firewall off. I wouldn’t recommend this setting to anyone.

The Allow Only Essential Services option will block anything except a few default networking services, such as Bonjour. It prevents file sharing, remote access, and other optional services. You should use this option only if you really want to block everything. I use this option when I’m on potentially hostile networks, such as those in hotels or public hotspots, and don’t want to bother with manually turning off all my shared services (see “Firewalls on the Road”).

The third option, Set Access For Specific Services And Applications, is the one I recommend for everyday use. It’s actually a new kind of firewall for OS X. It’s what’s known as an applicationfirewall. Previous versions of OS X used a technology known as stateful packet inspection—a fancy way of saying the firewall blocked ports that weren’t being held open for use by approved applications. An application firewall like the one in Leopard blocks traffic targeting specific applications, not specific ports.

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Tired of the default Leopard’s 3D dock background image?
To install a custom backgrounds for your dock:

1. Just go into System/Library/CoreServices/ right-click on Dock and select “show package contents”. 
2. Once here go into Contents and then resources. Copy the image files here, but be sure to back up the original files if you want to revert back to the default leopard appearance.
3. Once the images are in place, go into terminal and type killall dock - this will close the dock and restart it. 
4. When it comes back up your new background should be in place.

Download some backgrounds here and even more here.

Apple Inc. this week began testing Mac OS X 10.5.3 Update, a third maintenance and security update to its relatively new Leopard operating system that already bundles over 75 bug fixes and code corrections.

read more | digg story

Apple just released this RAW update, available from your Software Update.

This update extends RAW file compatibility for Aperture 2 and iPhoto ’08 for the following cameras:

Hasselblad CFV-16
Hasselblad H3D-31
Hasselblad H3D-31II
Leaf Aptus 54S
Leaf Aptus 65S
Nikon D60
Olympus E-3
Pentax *ist DL2
Pentax *ist DS2
Pentax K100D Super
Sony DSLR-A200
Sony DSLR-A350

To find all Applications that are compiled for 64 bit is pretty easy.

In Terminal, type either the Intel or PowerPC command below:

•  For Intel: locate -0 app/Contents/MacOS/ | xargs -0 file | grep x86_64
  
• For PowerPC: locate -0 app/Contents/MacOS/ | xargs -0 file | grep ppc64

1. When accepting an invitation in iCal, hold down accept instead of just clicking it to produce a pop-up menu of which cal it should go in.
2. If you have Dock magnification disabled, hold “ctrl + shift” while hovering over the Dock with your mouse to temporarily see magnification.
3. Is your registration information always wrong when setting up a new computer? Modify your Apple ID profile @ https://myinfo.apple.com
4. iCal: When clicking the plus sign in the bottom left corner to create a new calendar, hold “shift” to create a calendar group instead.
5. Hold down the “option” key while resizing the Dock using the divider to have the size snap to set increments.
6. Hold “command” + “option” + “control” and hit the “8″ key to inverse the screen colors.
7. In any Open/Save dialog, hit “command + shift + d” to move the selection to the desktop.
8. Finder: When drag & dropping files across volumes, hold down the “Command” key to move the file instead of copying it.
9. Photo Booth: Hold the “option” key to skip countdown and take immediate photo. Hold the “shift” key to disable the screen flash.
10. Hold down the “option” key when clicking on any app in the dock to hide all other apps before showing the selected app.
11. Leopard Mail.app - For attachments, hold “shift” while selecting the “save” button in the message header to bring up the “save as” dialog.
12. Hold down the “shift” key during almost any OS X animation to watch it in slow motion.