Badges gone wild

what's with the badges going haywire? Both me and a colleague have received badges for stuff we haven't done (including being awarded the "Indie" badge whilst actually on Google!, gaining the alpha badge for no reason and getting the "science-it works" badge despite not going on it). The one badge I did actually go for (boing, boing- logged on for about 10 straight days) i still haven't been awarded. What gives?