Macintosh Updates Updated -- We just released a new version of the Macintosh Updates database (with all the formats in the same archive, along with a text-only file) and I've uploaded to all the usual places. It contains a number of changes from the previous version (TidBITS #223), and continues to be a must-have. [ACE]
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.