People didn't seem to like my asking for further explanation :(. I still don't see the bug, though I see my loop is written in a rather confusing way :(. I'm trying to compare what I have with sauoq's version. The first difference I see is whether the day number is printed just before or just after incrementing, which is really a cosmetic issue. We also differ on if the "used all votes" bonus applies to monks; Voting/Experience System could be read either way. (update: monks(5) don't seem to get the bonus--updating my version now)

my version:

  increment level if appropriate
  increment day
  add per-vote xp
  add login xp
  add all-votes-used xp
  repeat
[download]

sauoq's version:

  increment day
  increment level if appropriate
  add login xp
  add per-vote xp
  add all-votes-used xp
  repeat
[download]