Reputation points for 'today' is 20 for the week is 19. I didn't receive any down mods yesterday so it can't be subtracting 1 for that. I think there might me a calculation error here.
from balexandre (so I don't need to open up another question, but want to show my image regarding the same issue)
I have the exact same thing today:
one says 25, other 15 :-/
Is there a sync problem today?