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You can fix a Mac stuck in Expose without needing to force-restart your system.
The Dock can be moved and customized in several different ways.
If a program is using excessive CPU, you can pause it without quitting the program.
With a Terminal command, you can add spacers to the Mac OS X Dock, helping you group similar apps for a more organized look.
If you use the OS X Dashboard feature, there are several options to change the way it functions.
Even if solely for aesthetic purposes, the OS X Dock can be moved to the bottom or top corners of the display.
If clicking Finder sidebar items doesn't properly show their contents, then you may need to clear some settings files.
Apple provides a default Expose transition speed that is suitable for most people, but it can be altered if needed.
When troubleshooting network and Web connectivity, in addition to tackling browser caches and configurations, you might also consider refreshing your DNS cache.
While Apple's new Notification Center has its conveniences, some may prefer not to use it, but there's no direct way to turn it off.