I run this on my VPS to throttle SSH connections from dictionary attacks (OR disable keyboard based auth and alow only shared keys. No key, no access!).
Configure your services properly rather than relying on a firewall to secure you against lazy configurations. This is all I use IPTables for.
Best monospaced font ever is Consolas from Microsoft. It’s installed with the Office 2007/03 Compatibility Pack and with Office 2007. So you’ll need an instance of Windows with Office 2003/07 to get this font, it also comes with Visual Studio I think (as that is what this font was designed for, people looking at code all day)..
CPU frequency management is one of the keys to power preservation.
The Linux kernel now provides all the necessary tools to properly manage CPU frequency : no need to use a daemon (like cpufreqd or powernowd) to take care of your CPU.
Of course the benefits of such power management are obvious for a laptop, but most desktop users should also consider this.