I had a curious thing happen in the game. The Yor uncovered a precursor event which caused every class 0 planet in a 2 sector radius to suddenly become class 4 planets. I'm playing on a large map with common planets, so there were suddenly dozens of new class 4 planets. Neat.

The United Planets met shortly afterwards and a new planet had suddenly become habitable, and the UP were deciding who'd have it. I was the midst of a war with the Altarians and Terrans (stupid assasins), so I voted that the Yor could take the planet. Here's the problem -- the planet & system weren't named in the UP window. After the vote, the planet wasn't on the screen, and the Yor lost out. I'm not sure if the two problems are related, it's the first time I've encountered both events in a game.

I'm playing 1.1, and could post by latest save game and debug.err if it would help.