Czuch Czuckers: Do you mean version 3.01a (screenshot ) or maybe 3.0a2? I installed that version on my work computer; now I have both version 2 and version 3 installed and can run either depending on which icon I click (but I'm not running the "Minefield" version).
Anyway, barring extension/configuration problems, I believe you can uninstall all versions, download the version you prefer, and install only that version (maybe you'll have to reinstall extensions too).
(hide) If you want to find an opponent with similar playing skills to your own look in the Ratings page of the type of game you want and find a player with a similar BKR. (pauloaguia) (show all tips)