Software or hardware that compels the user to spend more time tweaking, configuring, adding-on, and generally serving the machine than they do actually using it.

This includes:

* a notorious proprietary operating system that requires regular yearly outlays of time and money. And the CPU manufacturer it rode in on.
* LinuxDistribution''''''s that never work when installed but entail nights and weekends of searching, downloading, combining and tweaking packages.
* hardware manufacturers that advertise "plug and play" but don't have the drivers ready for your OS revision.
* the many open source programmers that HelpSourceForgeSuck.
* just about any Unix WindowManager.

Here's another: an editor (with its own wiki, even!) with version numbers past the teens that buries its (estimate) 1500 preferences, but includes a Rogerian psychotherapist to help you deal with the sheer overload of knobs to tweak. ''Could you be referring to MicrosoftWord?'' [No, Emacs; the comment was literal in all respects, not satirical (aside from some hyperbole about intentions). Emacs is a much larger phenomenon than non-users could possibly imagine -- speaking as a vi user.]

''Not sure that this one qualifies, as EmacsEditor is actually '''useful''' out of the box, unlike the other examples above.''

Speaking as an Emacs user, I have found Vim to be more useful straight out of the box...