I will collect various useful things here. At least, I think I will...
For now, these are the sections I have usefull stuff for:

• EBTables & the SMC 2652W Wireless Accesspoint
• Screen & mutt and the space padding problem
• The 'BCE' (Background Color Erase) terminal capability
• (Toshiba?) laptops & repeating keys (repeaattingg kkeyys) in X11
• Rabobank internet bankieren mut.txt spaar rekening mutaties naar saldo grafiek parser in perl
• How I compile PHP as an Apache 2.x loadable module
• Automated mailinglist filtering with Exim Filters explained
• Automated folderhooks generation for your .muttrc
• Synchronous Streaming Network Audio script. Simultaneously plays MP3 files on two computers.
• Solution to the "SixXS IPv6 Tunnels that seem down, but actually aren't"-problem.
• FreeBSD package management fsckup recovery tool
• SFS (Self-certifying FileSystem) Debian Setup Mini HOWTO
• Apache htaccess authentication for everyone except you!
• Installing Java on Debian 'Unstable' GNU/Linux systems is easy!
• My Mozilla Firefox Extensions / Plugins overview
• My .muttrc configuration in a tarball
• My .vimrc
• My .zshrc