Mac OS X 10.5 introduced a new feature that warned users when they first opened a file downloaded from the Internet. It's a protection mechanism to prevent users from opening potentially harmful files. It's also extremely annoying for users who download many files from known trustworthy. Thanks to a script from Creative Bits, disabling this feature just became a whole lot easier.
When this download warning first debuted, Macworld detailed a few terminal commands to disable this feature. You could either disable it permanently which removed all protection from accidentally downloaded files or disable it on a case-by-case basis. Running the command
