If you activate the all windows view of exposť with your keyboard or mouse, you do not need to click on the window of your choice, but simply place your mouse on top of the window and press the keyboard or mouse shortcut again.
Now I hear you ask, what is the use when surely it is just as convenient to click the window seen as you place your mouse on it anyway? And truthfully, when activating all windows from the keyboard, it isn't too useful.
However, in case you have set up one of your mouse buttons to view all windows it becomes useful, because usually clicking the same button twice requires actually less effort than clicking two different buttons in sequence.
Like some others out there, I am not a huge fan of Stacks and miss the Dock's old functionality (i.e. being able to browse folders' contents by Control-clicking). I thought to myself, "The Dock is just an application in the /System » Library » CoreServices folder, so can't I just use Tiger's Dock.app?"
When I upgraded to Leopard, I backed up to an external drive and did an Erase & Install so I had a copy of Tiger's Dock.app handy. I used both the Finder and Terminal to do the switch (but I'm sure you can use one or the other completely).
[robg adds: What follows should be considered highly experimental. Using the 10.4 dock in 10.5 may have unforeseen issues. If you choose to implement this hint, that decision is yours. Proceed cautiously, and make sure you've got a good backup before you start! Read on for the relatively simple how-to...]
If you open Spaces (using F8 by default), in addition to dragging open windows from pane to pane (space to space), you can also drag each space to different positions by clicking and dragging the pane itself (the background the windows rest upon) overtop another space.
I suppose this could be very useful, however it is worth noting that if you move space 1 into the position of space 2 (for example), an application set to always open on space 1 will not be reassigned to space 2. It will still open on position of space 1.
The visual cue of dragging a space from one position to the next is actually visually misleading; you are really dragging all the currently open windows from one space to the next... not actually replacing one space with another.
After installing Leopard, I had a problem with the battery on my MacBook Pro running down very quickly. Looking at Activity Monitor showed that syslogd was consuming between 90% and 106% of my CPU. Killing the process didn't help, because it would just restart and pick up right where it left off. After shutting down every application and ending all extraneous processes, syslogd was still going crazy.
It turns out that Time Machine performs some sort of logging prior to performing backup operations. I guess the process can get out of hand, which can cause some problems if you are running a laptop on battery. Fortunately, there's a simple fix:
Disable Time Machine: Go to the Time Machine pane of System Preferences, then set the switch to Off and close System Preferences.
Kill the syslogd process: Launch Activity Monitor (in /Applications » Utilities), find and select syslogd, and click Quit Process. You will need to authenticate.
At this point, the process should restart, but the CPU usage should be next to nothing.
[robg adds: I did a bit of searching, and it seems this is more than an isolated incident, though it's not widespread. I would expect that, after killing and restarting syslogd, you could then restart Time Machine. However, since I haven't seen this problem, I can't test this theory.]
In previous versions of OS X, you had to command-click on a proxy icon (the small icon in the window's title bar) to see the path pulldown menu (or URL path, in the case of Safari). Now in Leopard , you are able to right-click on the proxy icon and name and get the same result (also works in Safari).
Leopard supports signed applications to improve its security model. All the system utilities, in fact, come signed by Apple. To sign and check applications, the codesign command line utility is available. For example, to display all information about Terminal.app's code signature, open up a terminal and type:
I'm not sure if these hot keys worked in 10.4 as well, but while taking a screenshot in Leopard using the standard Shift-Command-4, I instinctively tried the Space Bar (being a Photoshop user) to try to move the selection. To my surprise, it worked! So a few more include the following, which are a bit tough to explain in words, and are better simply tried out to see the results:
Begin taking a screenshot by pressing Shift-Command-4, then start dragging. Then press and hold the following keys while still dragging to modify the selection before letting go and taking the shot:
Space Bar -- moves the selection while maintaining the current size.
Shift -- locks the x or y axis, depending on which direction you move the mouse after holding the Shift key down. For example, hold Shift and move up or down to keep your selection the same width, or press and hold Shift and move left or right to keep your selection the same height.
Alt (or Option) -- changes your selection mode to resize from the center out as opposed to from one corner to another.
Those are the keys I've found so far. They're incredibly useful when taking a precision screenshot!
Note that this only disables the icon, not the indexing. To disable that, edit /etc/hostconfig in Terminal (with sudo), and change the line that reads SPOTLIGHT=-YES- to SPOTLIGHT=-NO-. (FYI, in Tiger the Spotlight.app was called Search.bundle.)
[robg adds: I struck out the above about actually disabling Spotlight, as it doesn't work in 10.5. A newer hint will soon be published that will disable Spotlight, and when it shows up, I'll link to it here.]
You can exclude all system files from Time Machine's backups, but it's not exactly obvious how to do so. Open Time Machine's System Preferences panel, click on Options, click on the plus sign, select the /System folder in the dialog box, then click Exclude.
When you do so, an additional dialog will appear, asking if you wish to exclude all other system files and applications, or just the chosen folder. Click Exclude All System Files, and a 'special' item is added to the list to this effect.
As you've probably seen, there are a number of pre-defined searches available in the SEARCH FOR section of the sidebar. There are, however, a number of other searches that didn't quite make the cut. In the Finder, navigate to this directory:
In that directory, you'll find searches for All Applications, All Music, and All Presentations, amongst others.
[robg adds: If you'd like to use any of these canned searches in your SEARCH FOR sidebar, here's how I did it. First, copy the cannedSearch file to the desktop, then control-click on that copy and choose Show Package Contents from the pop-up menu. In the first folder that opens, you'll see a search.savedSearch file. Rename this to whatever you like, and drag it into the sidebar. Of course, for that much work, you could've easily rewritten the canned searches found in this folder.]