as i have been going up the levels - my needed amount of xp had simply been x 10 of my level. so at level 2400 - i needed to get 24000 xp. along comes the leap year calendar and suddenly i have to get x 20 my level in xp in order to progress to the next level. i thought it might have been to do with the amount of xp you could get during the calendar. however it has persisted. so now on level 2421 - i have to get 48420 xp to progress to the next level. why such a large jump in the necessary progression? or do i have a bug?