• I was working together with Jan Hubicka, Pavel Nejedly and Josef Zlomek on profile driven optimalizations for GCC (see project specification (in Czech), progress, documentation.
• I started (and never finished) writing a PBM (play by mail) game in Haskell. It is inspired by Rise of Heroes (a nice game, but a bit unbalanced and its C sources are really terrible). You may find the sources (of my game) here. They are not especially well written, but demonstrate several advanced techniques (I wanted to learn).