I went into "hibernation" several times. It is usually after a game like Platinum, Black 2 or White 2, because I usually rely too much on my past game to help me out, and I never get around to trading. Then something else captures my interest and I go on a hiatus from Pokemon. Then a new game is announced and I return to prepare for the new game, as I am right now with X and Y.
3DS FC: 4597 - 0384 - 5442
If you add me, PM me with your friend code and I'll add you.
Friend Safari: Grass; has Oddish, Ivysaur and Quilladin