I'd say, if the question is regarding a package with 5yr support (server related things in 10.04), then it's on-topic even if the user is running 10.04 Desktop. Just because there's no such thing as a "server edition" in my opinion as an "edition" is simply a preselected set of packages.
The user may be running an unsupported 10.04 Unity on top of a server, but that's most likely not related to an issue regarding let's say Apache web server or Python.
- Example on-topic: Installing python modules to non-default interpreter [Ubuntu 10.04]Installing python modules to non-default interpreter [Ubuntu 10.04]
- Example off-topic: E: Malformed line 54 in source list /etc/apt/sources.list (dist parse)E: Malformed line 54 in source list /etc/apt/sources.list (dist parse) (partner repository related)
