Have you made any levels for Q3A recently? If so, you're in violation of the license agreement.

When you installed the latest version of the game, you probably didn't bother reading the EULA. Who does? But if you had, you'd have seen this:

2. Prohibitions. You, either directly or indirectly, shall not do any of the following acts:

[...]

m. create or develop extra or add-on levels for the Software.

So even though Id Software supplies the Q3Radiant level editor specifically for creating Q3A levels, actually using it is not allowed. Weird, huh?

Don't worry, though, this isn't as stupid as it sounds. By the looks of things, what happened is that the EULA for Q3Test was mistakenly included with the latest patch. For a start, it's dated 23 April 1999, and there are several references to the software being a compatibility test version.

That said, you are still bound by the terms of the agreement, even if it is the wrong one. And that also means, bizarrely, that you're no longer allowed to use Q3A for "recreational purposes". So quit playing it!

It only goes to show - people in general do NOT read licenses before they agree to them, otherwise we'd have heard about this before, wouldn't we?