Replace Current Bootloader With GRUB
Debian
HOWTO: GRUB is the standard bootloader in the latest releases of Debian. However, another bootloader could have been installed on your computer.
Fixing a Messed Up Package Database
FreeBSD
HOWTO: The package database gets sometimes messed up, and the result is some strange errors about »pkgdb«. It's easy to fix.
Replace the Default Text Editor
FreeBSD
HOWTO: In FreeBSD »vi« is the default text editor. But the choise of a default text editor is customizable as everything else in the free world.
Apt, Fix GPG Error
Debian Etch
HOWTO: Signed repositories get verified with apt from version 0.6 which is part of Debian Etch. If a signiture key is missing on your system, apt-get will return an error message.
Use OpenDNS to Avoid Blocked Websites
Windows XP
HOWTO: Some Internet Service Providers (ISP) block various websites preventing you from visiting them. An easy workaround can put you back in control of which websites you want to visit.
Disable IPv6 for Good
Debian Sarge / Debian Etch
HOWTO: If you use good old IPv4 instead of IPv6 for your network connection, you should disable IPv6. The advantages are faster system boot and faster webbrowsing.