A technical question for you techie writer types out there. Do you use version-control software to keep a repository of your work? If so, what? What platform do you run it on? What do you like? What don't you? I know CVS pretty well from my programmer days, but I'm not sure that's what I want to use for my writing. Maybe Subversion? SVK? I've just started looking into this, and there are a whole lot of options.
I used to just use the Windows Briefcase to keep my writing in sync between machines, but my new laptop with Vista doesn't seem to implement Briefcase in a way that's entirely compatible with older versions, and anyway it doesn't do squat to keep copies of older drafts around. I'd like to start doing something a little more sophisticated than that.