SETI@home 3.08 Security Fix -- The distributed computing project SETI@home has released version 3.08 of their client software to eliminate the possibility of a buffer overflow error in the networking code that could result in a security hole. Personally, I've given up using SETI@home as a screen saver; instead I run it as a hidden application all the time, quitting it whenever I'm doing something that requires the full CPU power of my dual 1 GHz Power Mac G4 (Apple's CPU Monitor utility shows that my standard activities use only a fraction of the available processing power). If you run SETI@home, consider joining the TidBITS team, which is currently in 143rd place overall. [ACE]
Avoid Simple Typos
If, like me, you find yourself typing 2911 in place of 2011 entirely too often, you can have Mac OS X (either Lion or Snow Leopard) fix such typos for you automatically. Just open the Language & Text pane of System Preferences, click the Text button at the top, and then add a text substitution by clicking the + button underneath the list. It won't work everywhere (for that you'll want a utility like Smile's TextExpander), but it should work in applications like Pages and TextEdit, and in Save dialog boxes.