Turn Off Filename Extension Warning
In Leopard, Apple fixed an annoying aspect of working with the Finder in Tiger. Previously, if you changed a file's extension, the Finder prompted for confirmation. But since no one has ever accidentally changed a filename extension, Apple thankfully added an option to turn that warning off in the Leopard Finder's preferences. Choose Finder > Preferences, and in the Advanced screen, deselect Show Warning Before Changing an Extension.
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If you can’t remember or don't know the password associated with your TidBITS/Take Control account, please enter the email address that goes with your account. You will receive an email message with a freshly randomized password. After logging in with that password, you can change it to something more memorable. (If you also receive email about Take Control ebooks at this email address, requesting a new password will also reset the password for accessing your Take Control Library.)