Apago's PDF Enhancer may not be the sort of utility every Mac user needs, but for certain professionals, it's a must-have for automating the creation, standardization, and optimization of PDF documents (we rely on it heavily for our Take Control ebooks). Version 3.5 offers faster processing speeds (key in a production environment), improved reliability, clean-up of scanned documents, AES security, and improved font and color handling. With version 3.5, Apago has slimmed the product line, dropping the Standard and Server editions to focus on the Professional and Advanced Server editions. ($349 (Professional)/$1,999 (Advanced Server) new, upgrade prices vary)
Smarter Parental Controls
If you've been using the parental controls options in Mac OS X to lock your child out of using a particular computer late at night, but would like to employ a more clever technique to limit Internet access, turn to MAC address filtering on an Apple base station.
To do this, launch AirPort Utility, select your base station, and click Manual Setup. In the Access Control view, choose Time Access to turn on MAC filtering. You'll need to enter the MAC address of the particular computer, which (in 10.5 Leopard and 10.6 Snow Leopard) you can find in the Network System Preferences pane: click AirPort in the adapter list, and click Advanced. The AirPort ID is the MAC address.