Apple has released Apple Remote Desktop 3.7.2, a recommended update for all users. The release fixes an issue with the remote management software that caused incorrect IP addresses to be displayed in the Scanner, improves performance on networks with clients whose IP addresses change frequently, changes view order of screens in multi-observe mode, improves reliability of screen sharing sessions, enables automatic copy and paste between local and remote computers, and fixes a bug that caused clients to be incorrectly reported as Offline or Sleeping. ($79.99 new from the Mac App Store, free update, 19.6 MB)
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.