Although I try to learn new stuff all the time, old habits from when I began programming die hard and maybe I'm too conservative. I hardly ever use a debugger - I prefer to use printfs and think about what's happening. I eschew IDEs (which change from version to version and I find overly complex) and stick with vi (or vim) and makefiles. I tend to use windowed desktops as somewhere to stick a lot of terminals and use the command line rather than GUI tools. I tend to stick with tried-and-trusted (read "ancient, obsolete") libraries and techniques and avoid jumping on the latest and greatest until it's been shown that it won't go away and obsolete hard-earned knowledge. Learning python has shown me there's a lot I could be missing out on, especially numerical and GIS stuff, though.