When we introduced Big Harvest, we also inadvertently introduced a bug that allowed players to level much faster than intended. Yesterday we released a fix to address this bug, which is why many of you now have to gain additional experience points in order to reach your next level. Please know that no players lost experience as a result of this change, we simply corrected the amount of XP needed to level up.
The FarmVille 2 team is dedicated to providing an exceptional player experience and correcting this bug was necessary to ensure the quality and longevity of the game. We hope you enjoy the extra levels and bonuses you received while this bug was active and we apologize for any confusion or frustration this issue may have caused.