A strange thing... Every time I spam two or three skills in quick succession, or even if I spam one skill (even normal firing), be it space or ground battle, or even out of combat, my Number "2" skill is always triggered, if available. It makes no matter what skill I have mapped there, it's always the Number "2" skill.
I would leave the thing unmapped, but since it's one of the closest and easier to buttons to push keyboard-wise, it's really frustrating.
It's got nothing to do with my keyboard, or windows settings, as I've tried it in other games and it works just fine. I've tampered with the game settings, but I couldn't find anything to be wrong.
Already filed a bug report, but I was wondering if anyone else has/had the same problem.