In that case then Solved/Unsolved can work then. As they can just reopen anything auto closed as Solved if not answered.
Wasn't quick enough before, missed this part of your previous post until just seeing it now. Yes, Resolved/Solved both are good candidates for new phrasing to "replace" undone/done. I went back through the replies, and looks like most are in favor of "Solved/Unsolved" rather than "Resolved/Unresolved". I'm for either one, but looks as if "Solved/Unsolved" is the winner so far.
I can edit en.xml file, and reattach as 4.1./2.1 temporary solution for "Solved/Unsolved", because will be a while until 4.2 is out and I don't have funds to update to it immediately. Edit: I don't know, just still seems funny to me, so my vote still remains for Resolved/Unresolved. For some reason Solved/Unsolved doesn't ring right here in a general / support type forums.
But if solved/unsolved makes in 4.2, then will at least be better than Undone/Done. Haha. I'll just have to tweak it for Unresolved/Resolved for personal use.