Apple has released a minor update to its Logic family of music composition applications. For both Logic Pro 9.1.4 and Logic Express 9.1.4, the main new feature is the capability to open files that have been created by GarageBand on the iPad. In addition, the new releases address several unspecified minor issues. (Free updates, 192.5 MB and 138.7 MB respectively)
Mac OS X Zip Expanding Utility
Firefox (and possibly other applications) may ask you what you want to do with .zip archives that you download from the Internet. If you want to expand them with Mac OS X (rather than StuffIt Expander), you may be unsure of which application actually does the job. You're looking for Archive Utility (in Leopard and later) or BOMArchiveHelper (in Tiger). In either case, the application is stored in Hard Drive/System/Library/Core Services/. Don't move it from there, though, or you'll confuse matters.